Describe the enhancement requested

https://docs.aws.amazon.com/sdkref/latest/guide/feature-ss-endpoints.html

Service-specific endpoint configuration provides the option to use an endpoint of your choosing for API requests and to have that choice persist. These settings provide flexibility to support local endpoints, VPC endpoints, and third-party local AWS development environments. Different endpoints can be used for testing and production environments. You can specify an endpoint URL for individual AWS services.

#36791 added support for AWS_ENDPOINT_URL, I propose to also add support for AWS_ENDPOINT_URL_S3.
I can contribute a patch if this is an acceptable feature.

Component(s)

C++