What is Amazon S3
Amazon S3 is storage for the Internet. It is designed to make web-scale computing easier for developers.
S3 provides a simple web services interface that can be used to store and retrieve any amount of data, at any time, from anywhere on the web.
It gives any developer access to the same highly scalable, reliable, secure, fast, inexpensive infrastructure that Amazon uses to run its own global network of web sites.
The service aims to maximize benefits of scale and to pass those benefits on to developers.