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What exactly is a web service?
A web service is any piece of software that makes itself available over the internet. Computers use web service APIs (Application Programming Interfaces) to communicate with one another.
Okay, so what is aRESTfulWeb service?
REST (Representational State Transfer) is a messaging architecture used by many web service APIs. REST is a flexible architecture, with guidelines and support for multiple standards, such as HTTPS, JSON, and XML.
This article focuses on JSON, a popular data format for its flexibility and ease of use.