What is S$3.$

Answers:

A cloud$-$based data store much like a file server

Three copies of the same file server

A serverless compute environment

A messaging system service

A great way to exchange files with customers, clients or other business entities.

Open to the public by default.

Offers a varying array of Service Level Agreements which vary in price.

Often used by other AWS services as well as custom applications to manage file like data.

Glacier is great for back up$,-$ that is it is cheap to write to but expensive to read from.