Amazon Simple Storage Service is storage for the Internet. It is designed to make web-scale computing easier for developers. -- Amazon
Simple Storage Service(S3) is a an object storage service provided by AWS in 2006. S3 provides developers with a distributed data storage service with high scalability, high durability and high availability. The data storage structure of S3 is very simple, which is a flat two-layer structure: one layer is a bucket, and the other layer is a storage object. A bucket is a way to classify data in S3, it is a container for data storage and every object needs to be stored in a certain bucket. It will become a part of the domain name for users to access data, so the name of the bucket must be unique.