The relevance of API is important in the software development scenario. When it comes to API testing, it ensures that APIs function as expected, integrate properly with other systems and comply with standards. To further enhance a nd optimize the performance of API testing, there are specific methods involved that can be used strategically. In this article, you will get to know the four methods of API testing. What is API testing? Application Programming Interface (API) is a set of commands that can be used by an individua l program so that there is direct communication with one another and thus each other's functions can be used to get the required information. API testing is performed t o make sure that the correct response is returned as per the expected format. Testing REST (Representational State Transfer) APIs with JSON (JavaScript Object Notation) over HTTP (Hypertext Transfer Protocol) and HTTPS. The f ollo wing are a few points that...