Amazon Web Services (AWS) provides cloud computing infrastructure services including Elastic Compute Cloud (EC2) for computing power, Simple Storage Service (S3) for file storage, and Simple Queue Service (SQS) for messaging. EC2 allows users to launch virtual servers and pay based on usage. S3 provides unlimited storage and retrieval of files up to 5GB each. SQS is a distributed queue system that supports programmatic message passing between applications. AWS offers scalability, flexibility and reliability at low costs without long term commitments.