diff --git a/CHANGELOG.md b/CHANGELOG.md
index b01badbe3fd2e..6d4046e7b5bf5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Add support for msearch API to pass search pipeline name - ([#15923](https://github.com/opensearch-project/OpenSearch/pull/15923))
 - Add _list/indices API as paginated alternate to _cat/indices ([#14718](https://github.com/opensearch-project/OpenSearch/pull/14718))
 - Add success and failure metrics for async shard fetch ([#15976](https://github.com/opensearch-project/OpenSearch/pull/15976))
+- [S3 Repository] Change default retry mechanism of s3 clients to Standard Mode ([#15978](https://github.com/opensearch-project/OpenSearch/pull/15978))
 
 ### Dependencies
 - Bump `com.azure:azure-identity` from 1.13.0 to 1.13.2 ([#15578](https://github.com/opensearch-project/OpenSearch/pull/15578))
@@ -25,12 +26,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Bump `com.microsoft.azure:msal4j` from 1.17.0 to 1.17.1 ([#15945](https://github.com/opensearch-project/OpenSearch/pull/15945))
 - Bump `ch.qos.logback:logback-core` from 1.5.6 to 1.5.8 ([#15946](https://github.com/opensearch-project/OpenSearch/pull/15946))
 - Update protobuf from 3.25.4 to 3.25.5 ([#16011](https://github.com/opensearch-project/OpenSearch/pull/16011))
-- Bump `org.roaringbitmap:RoaringBitmap` from 1.2.1 to 1.3.0 ([#16040](https://github.com/opensearch-project/OpenSearch/pull/16040))
 - Bump `com.nimbusds:nimbus-jose-jwt` from 9.40 to 9.41.1 ([#16038](https://github.com/opensearch-project/OpenSearch/pull/16038))
 - Bump `actions/github-script` from 5 to 7 ([#16039](https://github.com/opensearch-project/OpenSearch/pull/16039))
 - Bump `dnsjava:dnsjava` from 3.6.1 to 3.6.2 ([#16041](https://github.com/opensearch-project/OpenSearch/pull/16041))
-- Bump `com.maxmind.geoip2:geoip2` from 4.2.0 to 4.2.1 ([#16042](https://github.com/opensearch-project/OpenSearch/pull/16042))
-- Bump `com.maxmind.db:maxmind-db` from 3.1.0 to 3.1.1 ([#16137](https://github.com/opensearch-project/OpenSearch/pull/16137))
 
 ### Changed
 - Add support for docker compose v2 in TestFixturesPlugin ([#16049](https://github.com/opensearch-project/OpenSearch/pull/16049))
@@ -47,7 +45,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Fix search_as_you_type not supporting multi-fields ([#15988](https://github.com/opensearch-project/OpenSearch/pull/15988))
 - Avoid infinite loop when `flat_object` field contains invalid token ([#15985](https://github.com/opensearch-project/OpenSearch/pull/15985))
 - Fix infinite loop in nested agg ([#15931](https://github.com/opensearch-project/OpenSearch/pull/15931))
-- Fix race condition in node-join and node-left ([#15521](https://github.com/opensearch-project/OpenSearch/pull/15521))
 
 ### Security
 
diff --git a/plugins/repository-s3/src/main/java/org/opensearch/repositories/s3/S3AsyncService.java b/plugins/repository-s3/src/main/java/org/opensearch/repositories/s3/S3AsyncService.java
index d691cad9c9d03..8bbef168de89c 100644
--- a/plugins/repository-s3/src/main/java/org/opensearch/repositories/s3/S3AsyncService.java
+++ b/plugins/repository-s3/src/main/java/org/opensearch/repositories/s3/S3AsyncService.java
@@ -18,6 +18,7 @@
 import software.amazon.awssdk.core.client.config.ClientAsyncConfiguration;
 import software.amazon.awssdk.core.client.config.ClientOverrideConfiguration;
 import software.amazon.awssdk.core.client.config.SdkAdvancedAsyncClientOption;
+import software.amazon.awssdk.core.retry.RetryMode;
 import software.amazon.awssdk.core.retry.RetryPolicy;
 import software.amazon.awssdk.core.retry.backoff.BackoffStrategy;
 import software.amazon.awssdk.http.async.SdkAsyncHttpClient;
@@ -239,7 +240,9 @@ static ClientOverrideConfiguration buildOverrideConfiguration(final S3ClientSett
                 RetryPolicy.builder()
                     .numRetries(clientSettings.maxRetries)
                     .throttlingBackoffStrategy(
-                        clientSettings.throttleRetries ? BackoffStrategy.defaultThrottlingStrategy() : BackoffStrategy.none()
+                        clientSettings.throttleRetries
+                            ? BackoffStrategy.defaultThrottlingStrategy(RetryMode.STANDARD)
+                            : BackoffStrategy.none()
                     )
                     .build()
             )
diff --git a/plugins/repository-s3/src/main/java/org/opensearch/repositories/s3/S3Service.java b/plugins/repository-s3/src/main/java/org/opensearch/repositories/s3/S3Service.java
index fe81da31432f4..3d5e121778ba9 100644
--- a/plugins/repository-s3/src/main/java/org/opensearch/repositories/s3/S3Service.java
+++ b/plugins/repository-s3/src/main/java/org/opensearch/repositories/s3/S3Service.java
@@ -42,6 +42,7 @@
 import software.amazon.awssdk.core.client.config.ClientOverrideConfiguration;
 import software.amazon.awssdk.core.client.config.SdkAdvancedClientOption;
 import software.amazon.awssdk.core.exception.SdkException;
+import software.amazon.awssdk.core.retry.RetryMode;
 import software.amazon.awssdk.core.retry.RetryPolicy;
 import software.amazon.awssdk.core.retry.backoff.BackoffStrategy;
 import software.amazon.awssdk.http.SystemPropertyTlsKeyManagersProvider;
@@ -330,6 +331,8 @@ static ClientOverrideConfiguration buildOverrideConfiguration(final S3ClientSett
         );
         if (!clientSettings.throttleRetries) {
             retryPolicy.throttlingBackoffStrategy(BackoffStrategy.none());
+        } else {
+            retryPolicy.throttlingBackoffStrategy(BackoffStrategy.defaultThrottlingStrategy(RetryMode.STANDARD));
         }
         return clientOverrideConfiguration.retryPolicy(retryPolicy.build()).build();
     }
diff --git a/plugins/repository-s3/src/test/java/org/opensearch/repositories/s3/AwsS3ServiceImplTests.java b/plugins/repository-s3/src/test/java/org/opensearch/repositories/s3/AwsS3ServiceImplTests.java
index b80b857644f2a..e7312157d7a33 100644
--- a/plugins/repository-s3/src/test/java/org/opensearch/repositories/s3/AwsS3ServiceImplTests.java
+++ b/plugins/repository-s3/src/test/java/org/opensearch/repositories/s3/AwsS3ServiceImplTests.java
@@ -35,6 +35,7 @@
 import software.amazon.awssdk.auth.credentials.AwsCredentialsProvider;
 import software.amazon.awssdk.auth.credentials.StaticCredentialsProvider;
 import software.amazon.awssdk.core.client.config.ClientOverrideConfiguration;
+import software.amazon.awssdk.core.retry.RetryMode;
 import software.amazon.awssdk.core.retry.backoff.BackoffStrategy;
 import software.amazon.awssdk.http.apache.ProxyConfiguration;
 
@@ -364,7 +365,7 @@ private void launchAWSConfigurationTest(
         if (expectedUseThrottleRetries) {
             assertThat(
                 clientOverrideConfiguration.retryPolicy().get().throttlingBackoffStrategy(),
-                is(BackoffStrategy.defaultThrottlingStrategy())
+                is(BackoffStrategy.defaultThrottlingStrategy(RetryMode.STANDARD))
             );
         } else {
             assertThat(clientOverrideConfiguration.retryPolicy().get().throttlingBackoffStrategy(), is(BackoffStrategy.none()));
diff --git a/plugins/repository-s3/src/test/java/org/opensearch/repositories/s3/S3AsyncServiceTests.java b/plugins/repository-s3/src/test/java/org/opensearch/repositories/s3/S3AsyncServiceTests.java
index de9ad46bb222d..be368a283148f 100644
--- a/plugins/repository-s3/src/test/java/org/opensearch/repositories/s3/S3AsyncServiceTests.java
+++ b/plugins/repository-s3/src/test/java/org/opensearch/repositories/s3/S3AsyncServiceTests.java
@@ -8,6 +8,11 @@
 
 package org.opensearch.repositories.s3;
 
+import software.amazon.awssdk.core.client.config.ClientOverrideConfiguration;
+import software.amazon.awssdk.core.retry.RetryMode;
+import software.amazon.awssdk.core.retry.backoff.BackoffStrategy;
+import software.amazon.awssdk.core.retry.backoff.FullJitterBackoffStrategy;
+
 import org.opensearch.cli.SuppressForbidden;
 import org.opensearch.cluster.metadata.RepositoryMetadata;
 import org.opensearch.common.settings.MockSecureSettings;
@@ -20,6 +25,8 @@
 import java.util.Map;
 import java.util.concurrent.Executors;
 
+import static org.hamcrest.Matchers.is;
+
 public class S3AsyncServiceTests extends OpenSearchTestCase implements ConfigPathSupport {
 
     @Override
@@ -92,4 +99,14 @@ public void testCachedClientsWithCredentialsAreReleased() {
         final S3ClientSettings clientSettingsReloaded = s3AsyncService.settings(metadata1);
         assertNotSame(clientSettings, clientSettingsReloaded);
     }
+
+    public void testS3AsyncServiceDefaultRetryMechanism() {
+        final S3ClientSettings clientSettings = S3ClientSettings.getClientSettings(Settings.EMPTY, "default", configPath());
+        ClientOverrideConfiguration clientOverrideConfiguration = S3AsyncService.buildOverrideConfiguration(clientSettings);
+        assertTrue(clientOverrideConfiguration.retryPolicy().isPresent());
+        assertThat(
+            clientOverrideConfiguration.retryPolicy().get().throttlingBackoffStrategy(),
+            is(BackoffStrategy.defaultThrottlingStrategy(RetryMode.STANDARD))
+        );
+    }
 }