Amazon Web Services (AWS) is a subsidiary of Amazon providing on-demand cloud computing platforms and APIs to individuals, companies, and governments on a metered pay-as-you-go basis. AWS offers a wide range of services including computing power, storage, databases, machine learning, analytics, and networking, enabling users to scale and grow their applications with flexibility and cost-efficiency. AWS is known for its reliability, scalability, and global infrastructure that allows customers to deploy applications quickly and securely.