Amazon Web Services (AWS) is a cloud computing platform that offers computing, storage, database, and other services on a pay-as-you-go basis with no long-term commitments. The document discusses AWS services that could help address the company's needs for availability, performance, and growth as user base increases from 2 million to 10 million in the next year. It provides a cost comparison of current hosting costs versus estimated costs of using AWS services over 3 years and recommends a combination of reserved and on-demand instances to handle unpredictable demand.