Overview of HTTP POST
An HTTP POST should contain the HTTP headers, a blank line, and the request body. In the body, the POST variables are stored as pair of key value.
Importance of HTTP POST Method
The method HTTP POST is designed to send data to an HTTP client to the server. When submitting login or contact forms or uploading files and images to the server, the HTTP POST method is often used.
Usage of RESTful Web Services
A software architectural style designed to guide the architecture for the World Wide Web is Representative State Transfer (REST).
In a Web service RESTful, requests sent to the URI of a resource generate a response that is formed in a payload that can be in HTML, XML, JSON, or other formats.