Working with S3 on Outposts objects - Amazon Simple Storage Service

Working with S3 on Outposts objects

With Amazon S3 on Outposts, you can create S3 buckets on your AWS Outposts and easily store and retrieve objects on premises for applications that require local data access, local data processing, and data residency. S3 on Outposts provides a new storage class, S3 Outposts (OUTPOSTS), which uses the Amazon S3 APIs, and is designed to store data durably and redundantly across multiple devices and servers on your AWS Outposts. You communicate with your Outpost bucket by using an access point and endpoint connection over a virtual private cloud (VPC). You can use the same APIs and features on Outpost buckets as you do on Amazon S3 buckets, including access policies, encryption, and tagging. You can use S3 on Outposts through the AWS Management Console, AWS Command Line Interface (AWS CLI), AWS SDKs, or REST API.

Objects are the fundamental entities stored in Amazon S3 on Outposts. Every object is contained in a bucket. You must use access points to access any object in an Outpost bucket. When you specify the bucket for object operations, you use the access point Amazon Resource Name (ARN) or the access point alias. For more information about access point aliases, see Using a bucket-style alias for your S3 on Outposts bucket access point.

The following example shows the ARN format for S3 on Outposts access points, which includes the AWS Region code for the Region that the Outpost is homed to, the AWS account ID, the Outpost ID, and the access point name:


For more information about S3 on Outposts ARNs, see Resource ARNs for S3 on Outposts.

Object ARNs use the following format, which includes the AWS Region that the Outpost is homed to, AWS account ID, Outpost ID, bucket name, and object key:


With Amazon S3 on Outposts, object data is always stored on the Outpost. When AWS installs an Outpost rack, your data stays local to your Outpost to meet data-residency requirements. Your objects never leave your Outpost and are not in an AWS Region. Because the AWS Management Console is hosted in-Region, you can't use the console to upload or manage objects in your Outpost. However, you can use the REST API, AWS Command Line Interface (AWS CLI), and AWS SDKs to upload and manage your objects through your access points.

To upload an object, see Step 4: Upload an object to an S3 on Outposts bucket. For other object actions, see the following topics.