AWS Transfer Family in multiple AWS accounts

AWS Transfer Family can work with Amazon S3 buckets in any AWS account, not just the one where your server is hosted. This makes it easier to set up, manage, and scale your file transfer workflows across multiple AWS accounts. With this setup, you will have a single AWS Transfer Family endpoint that can access S3 buckets in multiple accounts by assuming roles in those accounts.

To read a step-by-step guide, please refer to the following link from the knowledge center: How do I configure my AWS Transfer Family server to use an Amazon S3 bucket that's in another AWS account?