Rules for naming Amazon S3 Multi-Region Access Points

When you create a Multi-Region Access Point, you give it a name, which is a string that you choose. You can't change the name of the Multi-Region Access Point after it is created. The name must be unique in your AWS account, and it must conform to the naming requirements listed in Multi-Region Access Point restrictions and limitations. To help you identify the Multi-Region Access Point, use a name that is meaningful to you, to your organization, or that reflects the scenario.

You use this name when invoking Multi-Region Access Point management operations, such as GetMultiRegionAccessPoint and PutMultiRegionAccessPointPolicy. The name is not used to send requests to the Multi-Region Access Point, and it doesn’t need to be exposed to clients who make requests by using the Multi-Region Access Point.

When Amazon S3 creates a Multi-Region Access Point, it automatically assigns an alias to it. This alias is a unique alphanumeric string that ends in .mrap. The alias is used to construct the hostname and the Amazon Resource Name (ARN) for a Multi-Region Access Point. The fully qualified name is also based on the alias for the Multi-Region Access Point.

You can’t determine the name of a Multi-Region Access Point from its alias, so you can disclose an alias without risk of exposing the name, purpose, or owner of the Multi-Region Access Point. Amazon S3 selects the alias for each new Multi-Region Access Point, and the alias can’t be changed. For more information about addressing a Multi-Region Access Point, see Making requests through a Multi-Region Access Point.

Multi-Region Access Point aliases are unique throughout time and aren’t based on the name or configuration of a Multi-Region Access Point. If you create a Multi-Region Access Point, and then delete it and create another one with the same name and configuration, the second Multi-Region Access Point will have a different alias than the first. New Multi-Region Access Points can never have the same alias as a previous Multi-Region Access Point.