https://johnothecoder.uk/integration-devleopment/restful-apis-an-accurate-description/

Today I thought I would do a quick post to cover RESTful APIs, and what they are. The reason for this article is that I have, on numerous occasions, encountered developers (and indeed whole teams) who have misunderstood this concept at its very core. This causes a number of problems, firstly if you don’t understand RESTful APIs fundamentally, you’re likely to encounter integration issues quite early on. Secondly, unfortunately, if you’re a candidate interviewing for a role and haven’t understood what a RESTful API is properly, you’ll come unstuck in interview.