diff --git a/x-pack/plugins/infra/server/plugin.ts b/x-pack/plugins/infra/server/plugin.ts
index 6a2734b399199..afcbe69c01f5c 100644
--- a/x-pack/plugins/infra/server/plugin.ts
+++ b/x-pack/plugins/infra/server/plugin.ts
@@ -98,7 +98,7 @@ export const config: PluginConfigDescriptor<InfraConfig> = {
       }),
       inventoryThresholdAlertRuleEnabled: offeringBasedSchema({
         traditional: schema.boolean({ defaultValue: true }),
-        serverless: schema.boolean({ defaultValue: false }),
+        serverless: schema.boolean({ defaultValue: true }),
       }),
       metricThresholdAlertRuleEnabled: offeringBasedSchema({
         traditional: schema.boolean({ defaultValue: true }),
@@ -110,7 +110,7 @@ export const config: PluginConfigDescriptor<InfraConfig> = {
       }),
       alertsAndRulesDropdownEnabled: offeringBasedSchema({
         traditional: schema.boolean({ defaultValue: true }),
-        serverless: schema.boolean({ defaultValue: false }),
+        serverless: schema.boolean({ defaultValue: true }),
       }),
     }),
   }),
diff --git a/x-pack/plugins/observability/server/index.ts b/x-pack/plugins/observability/server/index.ts
index 96231115e3fa2..2153d00abdbc6 100644
--- a/x-pack/plugins/observability/server/index.ts
+++ b/x-pack/plugins/observability/server/index.ts
@@ -48,7 +48,7 @@ const configSchema = schema.object({
     }),
     thresholdRule: schema.object({
       enabled: offeringBasedSchema({
-        serverless: schema.boolean({ defaultValue: false }),
+        serverless: schema.boolean({ defaultValue: true }),
         traditional: schema.boolean({ defaultValue: true }),
       }),
     }),