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AWS efs documentation change

Service: efs · 2025-06-10 · Documentation medium

File: efs/latest/ug/api-reference.md

Summary

Expanded API endpoint documentation with IPv4/IPv6 dual-stack support and FIPS endpoints

Security assessment

The change adds documentation about FIPS-compliant endpoints which are security-enhancing features, but does not indicate remediation of a specific security vulnerability. The update improves security documentation by explaining compliance options.

Diff

diff --git a/efs/latest/ug/api-reference.md b/efs/latest/ug/api-reference.md
index de24e70a6..e18c401d8 100644
--- a//efs/latest/ug/api-reference.md
+++ b//efs/latest/ug/api-reference.md
@@ -5 +5 @@
-API endpointAPI versionRelated topicsWorking with the query API request rate for Amazon EFS
+API endpointsAPI versionRelated topicsWorking with the query API request rate for Amazon EFS
@@ -23 +23 @@ The operation name also appears in AWS CloudTrail logs for Amazon EFS API calls.
-## API endpoint
+## API endpoints
@@ -25 +25 @@ The operation name also appears in AWS CloudTrail logs for Amazon EFS API calls.
-The API endpoint is the DNS name used as a host in the HTTP URI for the API calls. These API endpoints are specific to AWS Regions and take the following form.
+An endpoint is a URL that serves as an entry point for an AWS web service. Amazon EFS supports the following endpoint types:
@@ -26,0 +27 @@ The API endpoint is the DNS name used as a host in the HTTP URI for the API call
+  * IPv4 endpoints
@@ -28 +29 @@ The API endpoint is the DNS name used as a host in the HTTP URI for the API call
-    elasticfilesystem.aws-region.amazonaws.com
+  * Dual-stack (both IPv4 and IPv6) endpoints
@@ -30 +31 @@ The API endpoint is the DNS name used as a host in the HTTP URI for the API call
-For example, the Amazon EFS API endpoint for the US West (Oregon) Region is the following.
+  * [FIPS endpoints](https://docs.aws.amazon.com/general/latest/gr/rande.html#FIPS-endpoints)
@@ -33 +33,0 @@ For example, the Amazon EFS API endpoint for the US West (Oregon) Region is the
-    elasticfilesystem.us-west-2.amazonaws.com
@@ -35 +34,0 @@ For example, the Amazon EFS API endpoint for the US West (Oregon) Region is the
-For a list of AWS Regions that Amazon EFS supports (where you can create and manage file systems), see [Amazon Elastic File System ](https://docs.aws.amazon.com/general/latest/gr/elasticfilesystem.html#elasticfilesystem-region) in the _AWS General Reference_.
@@ -37 +36,48 @@ For a list of AWS Regions that Amazon EFS supports (where you can create and man
-The region-specific API endpoint defines the scope of the Amazon EFS resources that are accessible when you make an API call. For example, when you call the `DescribeFileSystems` operation using the preceding endpoint, you get a list of file systems in the US West (Oregon) Region that have been created in your account. 
+When you make a request, you can specify the endpoint to use. If you do not specify an endpoint, the IPv4 endpoint is used by default. To use a different endpoint type, you must specify it in your request. For examples of how to do this, see Specifying endpoints. For a table of available endpoints, see [Amazon EFS endpoints and quotas](https://docs.aws.amazon.com/general/latest/gr/elasticfilesystem.html). 
+
+### IPv4 endpoints
+
+IPv4 endpoints support IPv4 traffic only. IPv4 endpoints are available for all Regions. The format of the IPv4 endpoint depends on the Region.
+
+  * For IPv4 endpoints in the AWS commercial Regions, the format is `elasticfilesystem.`region`.amazonaws.com`.
+
+For example, if you specify `elasticfilesystem.us-west-2.amazonaws.com` as the endpoint, we direct your request to the US West (Oregon) Region (us-west-2) endpoint.
+
+
+
+
+  * For IPv4 endpoints in the China Regions, the format is `elasticfilesystem.`region`.amazonaws.com.cn`.
+
+For example, the Amazon EFS API endpoint for the China (Beijing) Region is `elasticfilesystem.cn-north-1.amazonaws.com.cn`.
+
+
+
+
+### Dual-stack (IPv4 and IPv6) endpoints
+
+Dual-stack endpoints support both IPv4 and IPv6 traffic. When you make a request to a dual-stack endpoint, the endpoint URL resolves to an IPv6 or an IPv4 address, depending on the protocol used by your network and client. The format of the dual-stack endpoint depends on the Region.
+
+  * For dual-stack endpoints in the AWS commercial Regions, the format is `efs.`aws-region`.api.aws`.
+
+For example, the dual-stack endpoint for the US West (Oregon) Region (us-west-2) is `efs.eu-west-2.api.aws`.
+
+  * For dual-stack endpoints in the China Regions, the format is `efs.`region`.api.amazonwebservices.com.cn`.
+
+For example, the dual-stack endpoint for the China (Beijing) Region is `efs.cn-north-1.api.amazonwebservices.com.cn`.
+
+
+
+
+### Specifying endpoints
+
+The following examples show how to specify an endpoint for the US West (N. California) Region (us-west-1) using the AWS CLI for Amazon EFS.
+
+IPv4
+    
+    
+    aws efs get-rest-apis --region us-west-1 --endpoint-url https://elasticfilesystem.us-west-1.amazonaws.com
+
+Dual-stack
+    
+    
+    aws efs get-rest-apis --region us-west-1 --endpoint-url https://efs.us-west-1.api.aws