A REST API is a way for two computer systems to communicate. The API is the interface that defines how software components should interact. It’s a set of rules developers follow when creating their code. A REST API defines a set of functions developers can use to perform requests and receive responses. When you make a request, you are requesting information from the server. The server then processes the request and sends back a response. The response can be in the form of data, an error message, or both. For two systems to communicate using a REST API, they first need to agree on the format of the data that will be exchanged. The most common format is JSON, but XML is also popular. Once the data format has been agreed upon, the two systems can start exchanging information.
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