What is REST?

Question:
What is REST?

It is a way to store and interchange data in a structured format.
It is an architecture style for designing web service applications.
It is a human readable data structure that is used by applications for storing, transforming, and reading data.
It is a protocol that allows administrators to manage nodes on an IP network.

Explanation: REST is not a protocol or service, but rather a style of software architecture for designing web service applications.