diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index de123d0346f..6c9e1961e25 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -48,7 +48,15 @@ updates:
         - "eslint*"
 
   - package-ecosystem: "npm"
-    directory: "/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp"
+    directory: "/test/instrumentation/azure-functions/fixtures/azfunc3"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 5
+    reviewers:
+      - "elastic/apm-agent-node-js"
+
+  - package-ecosystem: "npm"
+    directory: "/test/instrumentation/azure-functions/fixtures/azfunc4"
     schedule:
       interval: "weekly"
     open-pull-requests-limit: 5
diff --git a/lib/instrumentation/azure-functions.js b/lib/instrumentation/azure-functions.js
index ea1247bae06..c755744a679 100644
--- a/lib/instrumentation/azure-functions.js
+++ b/lib/instrumentation/azure-functions.js
@@ -355,6 +355,8 @@ function instrument(agent) {
     }
 
     const context = hookCtx.invocationContext;
+    // console.log('XXX context:');
+    // console.dir(context, { depth: 50 }); // XXX
     const invocationId = context.invocationId;
     log.trace({ invocationId }, 'azure-functions: preInvocation');
 
@@ -363,30 +365,66 @@ function instrument(agent) {
       isFirstRun = false;
     }
 
+    // XXX https://github.com/elastic/apm-agent-nodejs/pull/4178/files for azfunc v4
+    let bindingDefinitions = context.bindingDefinitions;
+    if (!bindingDefinitions) {
+      // cater for possibly v4 version of the function app
+      bindingDefinitions = [];
+      // push input bindings
+      bindingDefinitions.push({
+        name: context?.options?.trigger?.name,
+        type: context?.options?.trigger?.type,
+        direction: context?.options?.trigger?.direction,
+      });
+      // push the output bindings
+      bindingDefinitions.push(context?.options?.return);
+    }
+    let executionContext = context.executionContext;
+    if (!executionContext) {
+      executionContext = {
+        functionDirectory: '',
+        functionName: context.functionName,
+      };
+    }
+
     const funcInfo = (hookCtx.hookData.funcInfo = new FunctionInfo(
-      context.bindingDefinitions,
-      context.executionContext,
+      bindingDefinitions,
+      executionContext,
       log,
     ));
     const triggerType = funcInfo.triggerType;
 
     // Handle trace-context.
-    // Note: We ignore the `context.traceContext`. By default it is W3C
-    // trace-context that continues the given traceparent in headers. However,
-    // we do not injest that span, so would get a broken distributed trace if
-    // we included it.
+    // XXX bring back distributed tracing language.
+    // XXX also with v4 we don't ahve access to the request headers (context.req.headers),
+    //     so we cannot optionally use a traceparent header there. That means
+    //     distributed traces going through HTTP-triggered Azure Functions
+    //     won't be connected in our waterfall because of the broken trace limitation.
+    // XXX Possible concerns:
+    // - Was `traceContext` appropriate/accurate with Azure Functions v3?
+    //   I.e. for TRIGGER_HTTP, did it reflect an incoming traceparent header?
+    // - When incoming requests do *not* provide trace context, Azure Functions
+    //   provides a traceparent. At least when running locally it always has
+    //   the sampling flag set *false*! If this happens in a deployed function
+    //   then that looks like no tracing at all. Do we want to call out
+    //   `traceContinuationStrategy`?
     let traceparent;
     let tracestate;
     if (triggerType === TRIGGER_HTTP && context.req && context.req.headers) {
       traceparent =
         context.req.headers.traceparent ||
-        context.req.headers['elastic-apm-traceparent'];
-      tracestate = context.req.headers.tracestate;
+        context.req.headers['elastic-apm-traceparent'] ||
+        context.traceContext.traceParent;
+      tracestate =
+        context.req.headers.tracestate || context.traceContext.traceState;
+    } else if (context.traceContext) {
+      traceparent = context.traceContext.traceParent;
+      tracestate = context.traceContext.traceState;
     }
 
     const trans = (hookCtx.hookData.trans = ins.startTransaction(
       // This is the default name. Trigger-specific values are added below.
-      context.executionContext.functionName,
+      executionContext.functionName,
       TRANS_TYPE_FROM_TRIGGER_TYPE[triggerType],
       {
         childOf: traceparent,
@@ -399,7 +437,7 @@ function instrument(agent) {
     const accountId = getAzureAccountId();
     const resourceGroup = process.env.WEBSITE_RESOURCE_GROUP;
     const fnAppName = process.env.WEBSITE_SITE_NAME;
-    const fnName = context.executionContext.functionName;
+    const fnName = executionContext.functionName;
     const faasData = {
       trigger: {
         type: FAAS_TRIGGER_TYPE_FROM_TRIGGER_TYPE[triggerType],
diff --git a/lib/instrumentation/transaction.js b/lib/instrumentation/transaction.js
index 5280bee3220..feb9d469df3 100644
--- a/lib/instrumentation/transaction.js
+++ b/lib/instrumentation/transaction.js
@@ -91,6 +91,7 @@ function Transaction(agent, name, ...args) {
     sampled: this.sampled,
     name: this.name,
     type: this.type,
+    traceparent: this.traceparent,
   });
 
   this._defaultName = name || '';
diff --git a/test/instrumentation/azure-functions/azure-functions.test.js b/test/instrumentation/azure-functions/azure-functions-v3.test.js
similarity index 93%
rename from test/instrumentation/azure-functions/azure-functions.test.js
rename to test/instrumentation/azure-functions/azure-functions-v3.test.js
index 758435bc2d9..1c03ff4900a 100644
--- a/test/instrumentation/azure-functions/azure-functions.test.js
+++ b/test/instrumentation/azure-functions/azure-functions-v3.test.js
@@ -6,6 +6,8 @@
 
 'use strict';
 
+// Test Azure Functions programming model v3.
+
 const assert = require('assert');
 const { exec, spawn } = require('child_process');
 const fs = require('fs');
@@ -20,12 +22,14 @@ const treekill = require('tree-kill');
 const { MockAPMServer } = require('../../_mock_apm_server');
 const { formatForTComment } = require('../../_utils');
 
-if (!semver.satisfies(process.version, '>=14.1.0 <19')) {
-  // The "14.1.0" version is selected to skip testing on Node.js v14.0.0
-  // because of the issue described here:
-  // https://github.com/elastic/apm-agent-nodejs/issues/3279#issuecomment-1532084620
+// Azure Functions programming model v3 supports node 14.x-20.x:
+// https://learn.microsoft.com/en-ca/azure/azure-functions/functions-reference-node?tabs=javascript%2Cwindows%2Cazure-cli&pivots=nodejs-model-v4#supported-versions
+// However, let's only test with node 18.x for now. The testing involves
+// installing the ridiculously large "azure-functions-core-tools" dep, so it
+// isn't worth testing all versions.
+if (!semver.satisfies(process.version, '^18.0.1')) {
   console.log(
-    `# SKIP Azure Functions runtime ~4 does not support node ${process.version} (https://aka.ms/functions-node-versions)`,
+    '# SKIP Azure Functions v3 tests, only testing with Node.js v18.latest',
   );
   process.exit();
 } else if (os.platform() === 'win32') {
@@ -168,7 +172,7 @@ function checkExpectedApmEvents(t, apmEvents) {
   if (apmEvents.length > 0) {
     const metadata = apmEvents.shift().metadata;
     t.ok(metadata, 'metadata is first event');
-    t.equal(metadata.service.name, 'AJsAzureFnApp', 'metadata.service.name');
+    t.equal(metadata.service.name, 'azfunc3', 'metadata.service.name');
     t.equal(
       metadata.service.framework.name,
       'Azure Functions',
@@ -196,7 +200,7 @@ function checkExpectedApmEvents(t, apmEvents) {
     );
     t.equal(
       metadata.cloud.instance.name,
-      'AJsAzureFnApp',
+      'azfunc3',
       'metadata.cloud.instance.name',
     );
     t.equal(
@@ -256,7 +260,7 @@ function checkExpectedApmEvents(t, apmEvents) {
 const UUID_RE =
   /^[0-9A-F]{8}-[0-9A-F]{4}-[0-9A-F]{4}-[0-9A-F]{4}-[0-9A-F]{12}$/i;
 
-const fnAppDir = path.join(__dirname, 'fixtures', 'AJsAzureFnApp');
+const fnAppDir = path.join(__dirname, 'fixtures', 'azfunc3');
 const funcExe =
   path.resolve(fnAppDir, 'node_modules/.bin/func') +
   (os.platform() === 'win32' ? '.cmd' : '');
@@ -277,14 +281,10 @@ var TEST_REQUESTS = [
       t.equal(trans.type, 'request', 'transaction.type');
       t.equal(trans.outcome, 'success', 'transaction.outcome');
       t.equal(trans.result, 'HTTP 2xx', 'transaction.result');
-      t.equal(
-        trans.faas.name,
-        'AJsAzureFnApp/HttpFn1',
-        'transaction.faas.name',
-      );
+      t.equal(trans.faas.name, 'azfunc3/HttpFn1', 'transaction.faas.name');
       t.equal(
         trans.faas.id,
-        '/subscriptions/2491fc8e-f7c1-4020-b9c6-78509919fd16/resourceGroups/my-resource-group/providers/Microsoft.Web/sites/AJsAzureFnApp/functions/HttpFn1',
+        '/subscriptions/2491fc8e-f7c1-4020-b9c6-78509919fd16/resourceGroups/my-resource-group/providers/Microsoft.Web/sites/azfunc3/functions/HttpFn1',
         'transaction.faas.id',
       );
       t.equal(trans.faas.trigger.type, 'http', 'transaction.faas.trigger.type');
@@ -332,11 +332,7 @@ var TEST_REQUESTS = [
       t.equal(trans.name, 'GET /api/HttpFnError', 'transaction.name');
       t.equal(trans.outcome, 'failure', 'transaction.outcome');
       t.equal(trans.result, 'HTTP 5xx', 'transaction.result');
-      t.equal(
-        trans.faas.name,
-        'AJsAzureFnApp/HttpFnError',
-        'transaction.faas.name',
-      );
+      t.equal(trans.faas.name, 'azfunc3/HttpFnError', 'transaction.faas.name');
       t.equal(trans.faas.coldstart, false, 'transaction.faas.coldstart');
       t.equal(
         trans.context.request.method,
@@ -538,14 +534,10 @@ var TEST_REQUESTS = [
       const trans = apmEventsForReq[0].transaction;
       t.equal(trans.name, 'GET /api/HttpFn1', 'transaction.name');
       t.equal(trans.result, 'HTTP 2xx', 'transaction.result');
-      t.equal(
-        trans.faas.name,
-        'AJsAzureFnApp/HttpFn1',
-        'transaction.faas.name',
-      );
+      t.equal(trans.faas.name, 'azfunc3/HttpFn1', 'transaction.faas.name');
       t.equal(
         trans.faas.id,
-        '/subscriptions/2491fc8e-f7c1-4020-b9c6-78509919fd16/resourceGroups/my-resource-group/providers/Microsoft.Web/sites/AJsAzureFnApp/functions/HttpFn1',
+        '/subscriptions/2491fc8e-f7c1-4020-b9c6-78509919fd16/resourceGroups/my-resource-group/providers/Microsoft.Web/sites/azfunc3/functions/HttpFn1',
         'transaction.faas.id',
       );
       t.equal(
@@ -574,12 +566,12 @@ var TEST_REQUESTS = [
       t.equal(trans.result, 'HTTP 2xx', 'transaction.result');
       t.equal(
         trans.faas.name,
-        'AJsAzureFnApp/HttpFnRouteTemplate',
+        'azfunc3/HttpFnRouteTemplate',
         'transaction.faas.name',
       );
       t.equal(
         trans.faas.id,
-        '/subscriptions/2491fc8e-f7c1-4020-b9c6-78509919fd16/resourceGroups/my-resource-group/providers/Microsoft.Web/sites/AJsAzureFnApp/functions/HttpFnRouteTemplate',
+        '/subscriptions/2491fc8e-f7c1-4020-b9c6-78509919fd16/resourceGroups/my-resource-group/providers/Microsoft.Web/sites/azfunc3/functions/HttpFnRouteTemplate',
         'transaction.faas.id',
       );
       t.equal(
@@ -605,7 +597,7 @@ var TEST_REQUESTS = [
       t.equal(apmEventsForReq.length, 4);
       const t1 = apmEventsForReq[0].transaction;
       t.equal(t1.name, 'GET /api/HttpFnDistTraceA', 't1.name');
-      t.equal(t1.faas.name, 'AJsAzureFnApp/HttpFnDistTraceA', 't1.faas.name');
+      t.equal(t1.faas.name, 'azfunc3/HttpFnDistTraceA', 't1.faas.name');
       const s1 = apmEventsForReq[1].span;
       t.equal(s1.name, 'spanA', 's1.name');
       t.equal(s1.parent_id, t1.id, 's1 is a child of t1');
@@ -615,7 +607,7 @@ var TEST_REQUESTS = [
       t.equal(s2.parent_id, s1.id, 's2 is a child of s1');
       const t2 = apmEventsForReq[3].transaction;
       t.equal(t2.name, 'GET /api/HttpFnDistTraceB', 't2.name');
-      t.equal(t2.faas.name, 'AJsAzureFnApp/HttpFnDistTraceB', 't2.faas.name');
+      t.equal(t2.faas.name, 'azfunc3/HttpFnDistTraceB', 't2.faas.name');
       t.equal(t2.parent_id, s2.id, 't2 is a child of s2');
       t.equal(
         t2.context.request.headers.traceparent,
@@ -659,7 +651,7 @@ tape.test(
   },
 );
 
-tape.test('azure functions', function (suite) {
+tape.test('azure functions v3', function (suite) {
   let apmServer;
   let apmServerUrl;
 
@@ -673,7 +665,7 @@ tape.test('azure functions', function (suite) {
   });
 
   let fnAppProc;
-  suite.test('setup: "func start" for AJsAzureFnApp fixture', (t) => {
+  suite.test('setup: "func start" for azfunc3 fixture', (t) => {
     fnAppProc = spawn(funcExe, ['start'], {
       cwd: fnAppDir,
       env: Object.assign({}, process.env, {
@@ -698,11 +690,11 @@ tape.test('azure functions', function (suite) {
       // binaries to "$fnAppDir/node_modules/azure-functions-core-tools/...",
       // which means a local test run on macOS followed by an attempted test run
       // in Docker will result in a crash:
-      //    node_tests_1  | # ["func start" stderr] /app/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/node_modules/azure-functions-core-tools/bin/func: 1: Syntax error: "(" unexpected
+      //    node_tests_1  | # ["func start" stderr] /app/test/instrumentation/azure-functions/fixtures/azfunc3/node_modules/azure-functions-core-tools/bin/func: 1: Syntax error: "(" unexpected
       //    node_tests_1  | not ok 2 "func start" failed early: code=2
       // For now the workaround is to manually clean that tree before running
       // tests on a separate OS:
-      //    rm -rf test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/node_modules
+      //    rm -rf test/instrumentation/azure-functions/fixtures/azfunc3/node_modules
       t.fail(`"func start" failed early: code=${code}`);
       fnAppProc = null;
       clearTimeout(earlyCloseTimer);
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/README.md b/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/README.md
deleted file mode 100644
index e9264594afb..00000000000
--- a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/README.md
+++ /dev/null
@@ -1,12 +0,0 @@
-A Node.js JavaScript Azure function app to be used for testing of
-elastic-apm-node.
-
-# Notes on how this was created
-
-- `func init AJsAzureFnApp`
-- Remove "azure-functions-core-tools" devDep and move to top-level to share
-  between possibly many fixtures.
-- An HTTP-triggered function: `func new --name HttpFn1 --template "HTTP trigger" --authlevel "anonymous"`
-- ...
-
-
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/.gitignore b/test/instrumentation/azure-functions/fixtures/azfunc3/.gitignore
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/.gitignore
rename to test/instrumentation/azure-functions/fixtures/azfunc3/.gitignore
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFn1/function.json b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFn1/function.json
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFn1/function.json
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFn1/function.json
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFn1/index.js b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFn1/index.js
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFn1/index.js
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFn1/index.js
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnBindingsRes/function.json b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnBindingsRes/function.json
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnBindingsRes/function.json
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnBindingsRes/function.json
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnBindingsRes/index.js b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnBindingsRes/index.js
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnBindingsRes/index.js
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnBindingsRes/index.js
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnContextDone/function.json b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnContextDone/function.json
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnContextDone/function.json
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnContextDone/function.json
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnContextDone/index.js b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnContextDone/index.js
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnContextDone/index.js
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnContextDone/index.js
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnDistTraceA/function.json b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnDistTraceA/function.json
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnDistTraceA/function.json
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnDistTraceA/function.json
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnDistTraceA/index.js b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnDistTraceA/index.js
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnDistTraceA/index.js
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnDistTraceA/index.js
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnDistTraceB/function.json b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnDistTraceB/function.json
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnDistTraceB/function.json
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnDistTraceB/function.json
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnDistTraceB/index.js b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnDistTraceB/index.js
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnDistTraceB/index.js
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnDistTraceB/index.js
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnError/function.json b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnError/function.json
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnError/function.json
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnError/function.json
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnError/index.js b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnError/index.js
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnError/index.js
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnError/index.js
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnReturnContext/function.json b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnReturnContext/function.json
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnReturnContext/function.json
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnReturnContext/function.json
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnReturnContext/index.js b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnReturnContext/index.js
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnReturnContext/index.js
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnReturnContext/index.js
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnReturnObject/function.json b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnReturnObject/function.json
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnReturnObject/function.json
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnReturnObject/function.json
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnReturnObject/index.js b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnReturnObject/index.js
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnReturnObject/index.js
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnReturnObject/index.js
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnReturnResponseData/function.json b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnReturnResponseData/function.json
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnReturnResponseData/function.json
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnReturnResponseData/function.json
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnReturnResponseData/index.js b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnReturnResponseData/index.js
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnReturnResponseData/index.js
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnReturnResponseData/index.js
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnReturnString/function.json b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnReturnString/function.json
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnReturnString/function.json
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnReturnString/function.json
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnReturnString/index.js b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnReturnString/index.js
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnReturnString/index.js
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnReturnString/index.js
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnRouteTemplate/function.json b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnRouteTemplate/function.json
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnRouteTemplate/function.json
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnRouteTemplate/function.json
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnRouteTemplate/index.js b/test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnRouteTemplate/index.js
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/HttpFnRouteTemplate/index.js
rename to test/instrumentation/azure-functions/fixtures/azfunc3/HttpFnRouteTemplate/index.js
diff --git a/test/instrumentation/azure-functions/fixtures/azfunc3/README.md b/test/instrumentation/azure-functions/fixtures/azfunc3/README.md
new file mode 100644
index 00000000000..9e3ea2e8ed6
--- /dev/null
+++ b/test/instrumentation/azure-functions/fixtures/azfunc3/README.md
@@ -0,0 +1,3 @@
+A Node.js Azure Functions app, using **version 3** of the Node.js
+programming model. See:
+https://learn.microsoft.com/en-ca/azure/azure-functions/functions-node-upgrade-v4
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/host.json b/test/instrumentation/azure-functions/fixtures/azfunc3/host.json
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/host.json
rename to test/instrumentation/azure-functions/fixtures/azfunc3/host.json
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/initapm.js b/test/instrumentation/azure-functions/fixtures/azfunc3/initapm.js
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/initapm.js
rename to test/instrumentation/azure-functions/fixtures/azfunc3/initapm.js
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/local.settings.json b/test/instrumentation/azure-functions/fixtures/azfunc3/local.settings.json
similarity index 92%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/local.settings.json
rename to test/instrumentation/azure-functions/fixtures/azfunc3/local.settings.json
index 51058f07a53..8910ca349e0 100644
--- a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/local.settings.json
+++ b/test/instrumentation/azure-functions/fixtures/azfunc3/local.settings.json
@@ -7,7 +7,7 @@
     "WEBSITE_NODE_DEFAULT_VERSION": "~16",
     "FUNCTIONS_EXTENSION_VERSION": "~4",
 
-    "WEBSITE_SITE_NAME": "AJsAzureFnApp",
+    "WEBSITE_SITE_NAME": "azfunc3",
     "WEBSITE_OWNER_NAME": "2491fc8e-f7c1-4020-b9c6-78509919fd16+my-resource-group-ARegionShortNamewebspace",
     "WEBSITE_RESOURCE_GROUP": "my-resource-group",
     "WEBSITE_INSTANCE_ID": "test-website-instance-id",
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/package-lock.json b/test/instrumentation/azure-functions/fixtures/azfunc3/package-lock.json
similarity index 99%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/package-lock.json
rename to test/instrumentation/azure-functions/fixtures/azfunc3/package-lock.json
index c2b5968f996..786aa2cee4a 100644
--- a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/package-lock.json
+++ b/test/instrumentation/azure-functions/fixtures/azfunc3/package-lock.json
@@ -1,5 +1,5 @@
 {
-  "name": "AJsAzureFnApp",
+  "name": "azfunc3",
   "version": "1.0.0",
   "lockfileVersion": 2,
   "requires": true,
diff --git a/test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/package.json b/test/instrumentation/azure-functions/fixtures/azfunc3/package.json
similarity index 100%
rename from test/instrumentation/azure-functions/fixtures/AJsAzureFnApp/package.json
rename to test/instrumentation/azure-functions/fixtures/azfunc3/package.json
diff --git a/test/instrumentation/azure-functions/fixtures/azfunc4/.funcignore b/test/instrumentation/azure-functions/fixtures/azfunc4/.funcignore
new file mode 100644
index 00000000000..17bd0f697c2
--- /dev/null
+++ b/test/instrumentation/azure-functions/fixtures/azfunc4/.funcignore
@@ -0,0 +1,10 @@
+*.js.map
+*.ts
+.git*
+.vscode
+local.settings.json
+test
+getting_started.md
+node_modules/@types/
+node_modules/azure-functions-core-tools/
+node_modules/typescript/
\ No newline at end of file
diff --git a/test/instrumentation/azure-functions/fixtures/azfunc4/.npmrc b/test/instrumentation/azure-functions/fixtures/azfunc4/.npmrc
new file mode 100644
index 00000000000..4eae7876ff1
--- /dev/null
+++ b/test/instrumentation/azure-functions/fixtures/azfunc4/.npmrc
@@ -0,0 +1 @@
+lockfile-version=3
diff --git a/test/instrumentation/azure-functions/fixtures/azfunc4/README.md b/test/instrumentation/azure-functions/fixtures/azfunc4/README.md
new file mode 100644
index 00000000000..1da6020a3af
--- /dev/null
+++ b/test/instrumentation/azure-functions/fixtures/azfunc4/README.md
@@ -0,0 +1,3 @@
+A Node.js Azure Functions app, using **version 4** of the Node.js
+programming model. See:
+https://learn.microsoft.com/en-ca/azure/azure-functions/functions-node-upgrade-v4
diff --git a/test/instrumentation/azure-functions/fixtures/azfunc4/host.json b/test/instrumentation/azure-functions/fixtures/azfunc4/host.json
new file mode 100644
index 00000000000..9df913614d9
--- /dev/null
+++ b/test/instrumentation/azure-functions/fixtures/azfunc4/host.json
@@ -0,0 +1,15 @@
+{
+  "version": "2.0",
+  "logging": {
+    "applicationInsights": {
+      "samplingSettings": {
+        "isEnabled": true,
+        "excludedTypes": "Request"
+      }
+    }
+  },
+  "extensionBundle": {
+    "id": "Microsoft.Azure.Functions.ExtensionBundle",
+    "version": "[4.*, 5.0.0)"
+  }
+}
\ No newline at end of file
diff --git a/test/instrumentation/azure-functions/fixtures/azfunc4/initapm.js b/test/instrumentation/azure-functions/fixtures/azfunc4/initapm.js
new file mode 100644
index 00000000000..80a62b23529
--- /dev/null
+++ b/test/instrumentation/azure-functions/fixtures/azfunc4/initapm.js
@@ -0,0 +1,23 @@
+/*
+ * Copyright Elasticsearch B.V. and other contributors where applicable.
+ * Licensed under the BSD 2-Clause License; you may not use this file except in
+ * compliance with the BSD 2-Clause License.
+ */
+
+// For the normal use case an "initapm.js" would look like:
+//    module.exports = require('elastic-apm-node').start(/* { ... } */)
+
+console.log('initapm: XXX start');
+module.exports = require('../../../../../').start({
+  // XXX remove all this config before merging
+  // XXX
+  logLevel: 'trace',
+  apiRequestTime: '5s',
+  // XXX traceContext Qs
+  traceContinuationStrategy: 'restart_external',
+  // XXX not fancy yet
+  cloudProvider: 'none',
+  centralConfig: false,
+  metricsInterval: '0s',
+});
+console.log('initapm: XXX done');
diff --git a/test/instrumentation/azure-functions/fixtures/azfunc4/local.settings.json b/test/instrumentation/azure-functions/fixtures/azfunc4/local.settings.json
new file mode 100644
index 00000000000..574eb480636
--- /dev/null
+++ b/test/instrumentation/azure-functions/fixtures/azfunc4/local.settings.json
@@ -0,0 +1,14 @@
+{
+  "IsEncrypted": false,
+  "Values": {
+    "FUNCTIONS_WORKER_RUNTIME": "node",
+    "AzureWebJobsStorage": "",
+
+    "FUNCTIONS_EXTENSION_VERSION": "~4",
+    "WEBSITE_SITE_NAME": "azfunc4",
+    "WEBSITE_OWNER_NAME": "2491fc8e-f7c1-4020-b9c6-78509919fd16+my-resource-group-ARegionShortNamewebspace",
+    "WEBSITE_RESOURCE_GROUP": "my-resource-group",
+    "WEBSITE_INSTANCE_ID": "test-website-instance-id",
+    "REGION_NAME": "test-region-name"
+  }
+}
diff --git a/test/instrumentation/azure-functions/fixtures/azfunc4/package-lock.json b/test/instrumentation/azure-functions/fixtures/azfunc4/package-lock.json
new file mode 100644
index 00000000000..e78727a8d2b
--- /dev/null
+++ b/test/instrumentation/azure-functions/fixtures/azfunc4/package-lock.json
@@ -0,0 +1,426 @@
+{
+  "name": "azfunc4",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "version": "1.0.0",
+      "dependencies": {
+        "@azure/functions": "^4.0.0",
+        "azure-functions-core-tools": "^4.0.6821"
+      }
+    },
+    "node_modules/@azure/functions": {
+      "version": "4.6.0",
+      "resolved": "https://registry.npmjs.org/@azure/functions/-/functions-4.6.0.tgz",
+      "integrity": "sha512-vGq9jXlgrJ3KaI8bepgfpk26zVY8vFZsQukF85qjjKTAR90eFOOBNaa+mc/0ViDY2lcdrU2fL/o1pQyZUtTDsw==",
+      "dependencies": {
+        "cookie": "^0.7.0",
+        "long": "^4.0.0",
+        "undici": "^5.13.0"
+      },
+      "engines": {
+        "node": ">=18.0"
+      }
+    },
+    "node_modules/@fastify/busboy": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/@fastify/busboy/-/busboy-2.1.1.tgz",
+      "integrity": "sha512-vBZP4NlzfOlerQTnba4aqZoMhE/a9HY7HRqoOPaETQcSQuWEIyZMHGfVu6w9wGtGK5fED5qRs2DteVCjOH60sA==",
+      "engines": {
+        "node": ">=14"
+      }
+    },
+    "node_modules/azure-functions-core-tools": {
+      "version": "4.0.6821",
+      "resolved": "https://registry.npmjs.org/azure-functions-core-tools/-/azure-functions-core-tools-4.0.6821.tgz",
+      "integrity": "sha512-D+VcQKPk+aVk9WRO56zlkq9xmeO+kxixDIMEIH2tG9OSSSxmioNOdjkpEnZuUEUdv6PPFn9vybcLhGCXL4Xftg==",
+      "hasInstallScript": true,
+      "hasShrinkwrap": true,
+      "os": [
+        "win32",
+        "darwin",
+        "linux"
+      ],
+      "dependencies": {
+        "chalk": "3.0.0",
+        "extract-zip": "^2.0.1",
+        "https-proxy-agent": "5.0.1",
+        "progress": "2.0.3",
+        "rimraf": "4.4.1"
+      },
+      "bin": {
+        "azfun": "lib/main.js",
+        "azurefunctions": "lib/main.js",
+        "func": "lib/main.js"
+      },
+      "engines": {
+        "node": ">=6.9.1"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/@types/color-name": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/@types/color-name/-/color-name-1.1.1.tgz",
+      "integrity": "sha512-rr+OQyAjxze7GgWrSaJwydHStIhHq2lvY3BOC2Mj7KnzI7XK0Uw1TOOdI9lDoajEbSWLiYgoo4f1R51erQfhPQ=="
+    },
+    "node_modules/azure-functions-core-tools/node_modules/@types/node": {
+      "version": "18.15.13",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-18.15.13.tgz",
+      "integrity": "sha512-N+0kuo9KgrUQ1Sn/ifDXsvg0TTleP7rIy4zOBGECxAljqvqfqpTfzx0Q1NUedOixRMBfe2Whhb056a42cWs26Q==",
+      "optional": true
+    },
+    "node_modules/azure-functions-core-tools/node_modules/@types/yauzl": {
+      "version": "2.10.0",
+      "resolved": "https://registry.npmjs.org/@types/yauzl/-/yauzl-2.10.0.tgz",
+      "integrity": "sha512-Cn6WYCm0tXv8p6k+A8PvbDG763EDpBoTzHdA+Q/MF6H3sapGjCm9NzoaJncJS9tUKSuCoDs9XHxYYsQDgxR6kw==",
+      "optional": true,
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/agent-base": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-6.0.2.tgz",
+      "integrity": "sha512-RZNwNclF7+MS/8bDg70amg32dyeZGZxiDuQmZxKLAlQjr3jGyLx+4Kkk58UO7D2QdgFIQCovuSuZESne6RG6XQ==",
+      "dependencies": {
+        "debug": "4"
+      },
+      "engines": {
+        "node": ">= 6.0.0"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/ansi-styles": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-4.2.0.tgz",
+      "integrity": "sha512-7kFQgnEaMdRtwf6uSfUnVr9gSGC7faurn+J/Mv90/W+iTtN0405/nLdopfMWwchyxhbGYl6TC4Sccn9TUkGAgg==",
+      "dependencies": {
+        "@types/color-name": "^1.1.1",
+        "color-convert": "^2.0.1"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/balanced-match": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
+      "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==",
+      "license": "MIT"
+    },
+    "node_modules/azure-functions-core-tools/node_modules/brace-expansion": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-2.0.1.tgz",
+      "integrity": "sha512-XnAIvQ8eM+kC6aULx6wuQiwVsnzsi9d3WxzV3FpWTGA19F621kwdbsAcFKXgKUHZWsy+mY6iL1sHTxWEFCytDA==",
+      "license": "MIT",
+      "dependencies": {
+        "balanced-match": "^1.0.0"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/buffer-crc32": {
+      "version": "0.2.13",
+      "resolved": "https://registry.npmjs.org/buffer-crc32/-/buffer-crc32-0.2.13.tgz",
+      "integrity": "sha512-VO9Ht/+p3SN7SKWqcrgEzjGbRSJYTx+Q1pTQC0wrWqHx0vpJraQ6GtHx8tvcg1rlK1byhU5gccxgOgj7B0TDkQ==",
+      "engines": {
+        "node": "*"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/chalk": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-3.0.0.tgz",
+      "integrity": "sha512-4D3B6Wf41KOYRFdszmDqMCGq5VV/uMAB273JILmO+3jAlh8X4qDtdtgCR3fxtbLEMzSx22QdhnDcJvu2u1fVwg==",
+      "dependencies": {
+        "ansi-styles": "^4.1.0",
+        "supports-color": "^7.1.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/color-convert": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
+      "integrity": "sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==",
+      "dependencies": {
+        "color-name": "~1.1.4"
+      },
+      "engines": {
+        "node": ">=7.0.0"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/color-name": {
+      "version": "1.1.4",
+      "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
+      "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA=="
+    },
+    "node_modules/azure-functions-core-tools/node_modules/debug": {
+      "version": "4.3.7",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.7.tgz",
+      "integrity": "sha512-Er2nc/H7RrMXZBFCEim6TCmMk02Z8vLC2Rbi1KEBggpo0fS6l0S1nnapwmIi3yW/+GOJap1Krg4w0Hg80oCqgQ==",
+      "license": "MIT",
+      "dependencies": {
+        "ms": "^2.1.3"
+      },
+      "engines": {
+        "node": ">=6.0"
+      },
+      "peerDependenciesMeta": {
+        "supports-color": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/end-of-stream": {
+      "version": "1.4.4",
+      "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.4.tgz",
+      "integrity": "sha512-+uw1inIHVPQoaVuHzRyXd21icM+cnt4CzD5rW+NC1wjOUSTOs+Te7FOv7AhN7vS9x/oIyhLP5PR1H+phQAHu5Q==",
+      "dependencies": {
+        "once": "^1.4.0"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/extract-zip": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/extract-zip/-/extract-zip-2.0.1.tgz",
+      "integrity": "sha512-GDhU9ntwuKyGXdZBUgTIe+vXnWj0fppUEtMDL0+idd5Sta8TGpHssn/eusA9mrPr9qNDym6SxAYZjNvCn/9RBg==",
+      "dependencies": {
+        "debug": "^4.1.1",
+        "get-stream": "^5.1.0",
+        "yauzl": "^2.10.0"
+      },
+      "bin": {
+        "extract-zip": "cli.js"
+      },
+      "engines": {
+        "node": ">= 10.17.0"
+      },
+      "optionalDependencies": {
+        "@types/yauzl": "^2.9.1"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/fd-slicer": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/fd-slicer/-/fd-slicer-1.1.0.tgz",
+      "integrity": "sha512-cE1qsB/VwyQozZ+q1dGxR8LBYNZeofhEdUNGSMbQD3Gw2lAzX9Zb3uIU6Ebc/Fmyjo9AWWfnn0AUCHqtevs/8g==",
+      "dependencies": {
+        "pend": "~1.2.0"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/fs.realpath": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
+      "integrity": "sha512-OO0pH2lK6a0hZnAdau5ItzHPI6pUlvI7jMVnxUQRtw4owF2wk8lOSabtGDCTP4Ggrg2MbGnWO9X8K1t4+fGMDw==",
+      "license": "ISC"
+    },
+    "node_modules/azure-functions-core-tools/node_modules/get-stream": {
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-5.2.0.tgz",
+      "integrity": "sha512-nBF+F1rAZVCu/p7rjzgA+Yb4lfYXrpl7a6VmJrU8wF9I1CKvP/QwPNZHnOlwbTkY6dvtFIzFMSyQXbLoTQPRpA==",
+      "dependencies": {
+        "pump": "^3.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/glob": {
+      "version": "9.3.5",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-9.3.5.tgz",
+      "integrity": "sha512-e1LleDykUz2Iu+MTYdkSsuWX8lvAjAcs0Xef0lNIu0S2wOAzuTxCJtcd9S3cijlwYF18EsU3rzb8jPVobxDh9Q==",
+      "license": "ISC",
+      "dependencies": {
+        "fs.realpath": "^1.0.0",
+        "minimatch": "^8.0.2",
+        "minipass": "^4.2.4",
+        "path-scurry": "^1.6.1"
+      },
+      "engines": {
+        "node": ">=16 || 14 >=14.17"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/has-flag": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
+      "integrity": "sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/https-proxy-agent": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-5.0.1.tgz",
+      "integrity": "sha512-dFcAjpTQFgoLMzC2VwU+C/CbS7uRL0lWmxDITmqm7C+7F0Odmj6s9l6alZc6AELXhrnggM2CeWSXHGOdX2YtwA==",
+      "license": "MIT",
+      "dependencies": {
+        "agent-base": "6",
+        "debug": "4"
+      },
+      "engines": {
+        "node": ">= 6"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/lru-cache": {
+      "version": "10.4.3",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-10.4.3.tgz",
+      "integrity": "sha512-JNAzZcXrCt42VGLuYz0zfAzDfAvJWW6AfYlDBQyDV5DClI2m5sAmK+OIO7s59XfsRsWHp02jAJrRadPRGTt6SQ==",
+      "license": "ISC"
+    },
+    "node_modules/azure-functions-core-tools/node_modules/minimatch": {
+      "version": "8.0.4",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-8.0.4.tgz",
+      "integrity": "sha512-W0Wvr9HyFXZRGIDgCicunpQ299OKXs9RgZfaukz4qAW/pJhcpUfupc9c+OObPOFueNy8VSrZgEmDtk6Kh4WzDA==",
+      "license": "ISC",
+      "dependencies": {
+        "brace-expansion": "^2.0.1"
+      },
+      "engines": {
+        "node": ">=16 || 14 >=14.17"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/minipass": {
+      "version": "4.2.8",
+      "resolved": "https://registry.npmjs.org/minipass/-/minipass-4.2.8.tgz",
+      "integrity": "sha512-fNzuVyifolSLFL4NzpF+wEF4qrgqaaKX0haXPQEdQ7NKAN+WecoKMHV09YcuL/DHxrUsYQOK3MiuDf7Ip2OXfQ==",
+      "license": "ISC",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/ms": {
+      "version": "2.1.3",
+      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
+      "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==",
+      "license": "MIT"
+    },
+    "node_modules/azure-functions-core-tools/node_modules/once": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+      "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
+      "dependencies": {
+        "wrappy": "1"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/path-scurry": {
+      "version": "1.11.1",
+      "resolved": "https://registry.npmjs.org/path-scurry/-/path-scurry-1.11.1.tgz",
+      "integrity": "sha512-Xa4Nw17FS9ApQFJ9umLiJS4orGjm7ZzwUrwamcGQuHSzDyth9boKDaycYdDcZDuqYATXw4HFXgaqWTctW/v1HA==",
+      "license": "BlueOak-1.0.0",
+      "dependencies": {
+        "lru-cache": "^10.2.0",
+        "minipass": "^5.0.0 || ^6.0.2 || ^7.0.0"
+      },
+      "engines": {
+        "node": ">=16 || 14 >=14.18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/path-scurry/node_modules/minipass": {
+      "version": "7.1.2",
+      "resolved": "https://registry.npmjs.org/minipass/-/minipass-7.1.2.tgz",
+      "integrity": "sha512-qOOzS1cBTWYF4BH8fVePDBOO9iptMnGUEZwNc/cMWnTV2nVLZ7VoNWEPHkYczZA0pdoA7dl6e7FL659nX9S2aw==",
+      "license": "ISC",
+      "engines": {
+        "node": ">=16 || 14 >=14.17"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/pend": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/pend/-/pend-1.2.0.tgz",
+      "integrity": "sha512-F3asv42UuXchdzt+xXqfW1OGlVBe+mxa2mqI0pg5yAHZPvFmY3Y6drSf/GQ1A86WgWEN9Kzh/WrgKa6iGcHXLg=="
+    },
+    "node_modules/azure-functions-core-tools/node_modules/progress": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/progress/-/progress-2.0.3.tgz",
+      "integrity": "sha512-7PiHtLll5LdnKIMw100I+8xJXR5gW2QwWYkT6iJva0bXitZKa/XMrSbdmg3r2Xnaidz9Qumd0VPaMrZlF9V9sA==",
+      "engines": {
+        "node": ">=0.4.0"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/pump": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/pump/-/pump-3.0.0.tgz",
+      "integrity": "sha512-LwZy+p3SFs1Pytd/jYct4wpv49HiYCqd9Rlc5ZVdk0V+8Yzv6jR5Blk3TRmPL1ft69TxP0IMZGJ+WPFU2BFhww==",
+      "dependencies": {
+        "end-of-stream": "^1.1.0",
+        "once": "^1.3.1"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/rimraf": {
+      "version": "4.4.1",
+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-4.4.1.tgz",
+      "integrity": "sha512-Gk8NlF062+T9CqNGn6h4tls3k6T1+/nXdOcSZVikNVtlRdYpA7wRJJMoXmuvOnLW844rPjdQ7JgXCYM6PPC/og==",
+      "license": "ISC",
+      "dependencies": {
+        "glob": "^9.2.0"
+      },
+      "bin": {
+        "rimraf": "dist/cjs/src/bin.js"
+      },
+      "engines": {
+        "node": ">=14"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/supports-color": {
+      "version": "7.1.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.1.0.tgz",
+      "integrity": "sha512-oRSIpR8pxT1Wr2FquTNnGet79b3BWljqOuoW/h4oBhxJ/HUbX5nX6JSruTkvXDCFMwDPvsaTTbvMLKZWSy0R5g==",
+      "dependencies": {
+        "has-flag": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/azure-functions-core-tools/node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
+    },
+    "node_modules/azure-functions-core-tools/node_modules/yauzl": {
+      "version": "2.10.0",
+      "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.10.0.tgz",
+      "integrity": "sha512-p4a9I6X6nu6IhoGmBqAcbJy1mlC4j27vEPZX9F4L4/vZT3Lyq1VkFHw/V/PUcB9Buo+DG3iHkT0x3Qya58zc3g==",
+      "dependencies": {
+        "buffer-crc32": "~0.2.3",
+        "fd-slicer": "~1.1.0"
+      }
+    },
+    "node_modules/cookie": {
+      "version": "0.7.2",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.7.2.tgz",
+      "integrity": "sha512-yki5XnKuf750l50uGTllt6kKILY4nQ1eNIQatoXEByZ5dWgnKqbnqmTrBE5B4N7lrMJKQ2ytWMiTO2o0v6Ew/w==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/long": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/long/-/long-4.0.0.tgz",
+      "integrity": "sha512-XsP+KhQif4bjX1kbuSiySJFNAehNxgLb6hPRGJ9QsUr8ajHkuXGdrHmFUTUUXhDwVX2R5bY4JNZEwbUiMhV+MA=="
+    },
+    "node_modules/undici": {
+      "version": "5.28.4",
+      "resolved": "https://registry.npmjs.org/undici/-/undici-5.28.4.tgz",
+      "integrity": "sha512-72RFADWFqKmUb2hmmvNODKL3p9hcB6Gt2DOQMis1SEBaV6a4MH8soBvzg+95CYhCKPFedut2JY9bMfrDl9D23g==",
+      "dependencies": {
+        "@fastify/busboy": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=14.0"
+      }
+    }
+  }
+}
diff --git a/test/instrumentation/azure-functions/fixtures/azfunc4/package.json b/test/instrumentation/azure-functions/fixtures/azfunc4/package.json
new file mode 100644
index 00000000000..4f755c02b79
--- /dev/null
+++ b/test/instrumentation/azure-functions/fixtures/azfunc4/package.json
@@ -0,0 +1,13 @@
+{
+  "name": "",
+  "version": "1.0.0",
+  "description": "",
+  "main": "{initapm.js,src/functions/*.js}",
+  "scripts": {
+    "start": "func start"
+  },
+  "dependencies": {
+    "@azure/functions": "^4.0.0",
+    "azure-functions-core-tools": "^4.0.6821"
+  }
+}
diff --git a/test/instrumentation/azure-functions/fixtures/azfunc4/src/functions/HttpExample.js b/test/instrumentation/azure-functions/fixtures/azfunc4/src/functions/HttpExample.js
new file mode 100644
index 00000000000..4b85e0f3f37
--- /dev/null
+++ b/test/instrumentation/azure-functions/fixtures/azfunc4/src/functions/HttpExample.js
@@ -0,0 +1,20 @@
+/*
+ * Copyright Elasticsearch B.V. and other contributors where applicable.
+ * Licensed under the BSD 2-Clause License; you may not use this file except in
+ * compliance with the BSD 2-Clause License.
+ */
+
+const { app } = require('@azure/functions');
+
+app.http('HttpExample', {
+  methods: ['GET', 'POST'],
+  authLevel: 'anonymous',
+  handler: async (_request, _context) => {
+    return {
+      body: 'HttpExample body',
+      headers: {
+        MyHeaderName: 'MyHeaderValue',
+      },
+    };
+  },
+});