In plain language
It is how one app asks another for data or tells it to do something over the web.
Example
A workflow sends a POST request with a JSON body to create a new support ticket.
Related terms
Endpoint · HTTP Status Code · Payload · Authentication
Common misconception
GET and POST are not interchangeable; methods carry meaning, and some, such as GET, should never change data.
Implementation guidance
Choose the right method, set the Content-Type and authentication headers, send the documented body format, and check the response status before continuing.