Amazon Cloud Drive's plans to provide a low cost, unlimited storage service presented a major engineering challenge. In this session, you learn how the Amazon Cloud Drive team designed and optimized the storage back-end, Amazon S3, to handle millions of users while containing infrastructure costs. In this session, the lead engineers share details of how they built the service for massive scale, and the regular steps they take to increase performance and efficiency. They also describe proven techniques for scaling and optimization, learned from experience.