Today I came across this useful SDK that helps you use AWS services from within Android applications.
AWS SDK for Android
The AWS SDK for Android provides a library, code samples, and documentation for developers to build connected mobile applications using Amazon Web Services. Example applications developers can build with the AWS SDK for Android include:
A media application that uploads photos, videos, and more to Amazon Simple Storage Service (Amazon S3) for world-wide distribution through Amazon CloudFront.
A social game that shares moves, high scores, and other data between devices using Amazon SimpleDB.
A messaging client that broadcasts messages between devices using Amazon Simple Queue Service (Amazon SQS) and Amazon Simple Notifications Service (Amazon SNS), without requiring any additional server infrastructure.