What is AWS?

Amazon Web Services, a subsidiary of Amazon.com, is a cloud computing platform that
was launched in 2006.

Specialising in Infrastructure-as-a-Service, the company launched its first offerings in 2006 to provide online services for websites and client-side applications, since then it has developed into the leading public cloud vendor.

AWS offers compute power, database storage, content delivery, and various other pieces of functionality as part of its ever expanding portfolio of services.

What are its most popular services?