The AWS Marketplace is where software producers may list their works for users of the AWS environment to access. Debian has worked with the Marketplace team to produce images of Debian and make this easier for AWS users to find, and to trust, these images.
Naturally, Debian charges nothing for these images. Debian has procudes these images in order to help its users gain access to trusted images.
For more information about Debian on Amazon Web Services EC2, see the Amazon EC2 Image page.
Creating Images for AWS Marketplace
Debian has been creating AMIs in AWS account number 379101102735. All 'master' images are generated in the US-East-1 Region, and made marked as 'public' to any other AWS customer, along with the corresponding snapshot for the AMI. After submitting the ProductLoadTemplate spreadsheet to the AWS Marketplace team, they duplicate the referenced AMI(s) into their account, and then re-distribute this to all AWS Marketplace supported Regions worldwide. Hence the original DD-generated AMI has one ID, and the AWS Marketplace 'owned' images have a new ID. Likewise, the snapshots that these AMIs rference will also have new IDs, but the content MD5 should match the original.