What are responsibility of POST protocol?

The POST protocol, part of the HTTP (Hypertext Transfer Protocol), is primarily responsible for submitting data to be processed to a specified resource, typically on a web server. It is commonly used in forms to send user input, such as registration or login information, and can also be utilized for file uploads. Unlike GET requests, which append data to the URL, POST requests encapsulate data in the body, allowing for larger amounts of data to be transmitted securely. Additionally, POST requests can alter server state or initiate actions, making them essential for web applications.