A rest API (it might also be known as restful API) is a programming interface app (API or web API) that conforms to the constraints of rest architectural style and allows for interaction with restful web services. Rest stands for representational state transfer and was created by computer scientist Roy Fielding.
The REST API creates an object and, after that, sends the values of an object in response to the client. It breaks down a transaction to create small modules. Now, each of these modules is used to address a specific part of the transaction.
This approach provides more flexibility but requires a lot of effort to be built from very scratch.
If that’s not enough, there are even more reasons why Rest API should be used, and most of these reasons are why it is so popular nowadays:
For example, it improves the portability of the interface to other types of platforms; it increases the projects’ scalability and allows the different components of the developments to be evolved independently.
They can migrate to other servers or make all kinds of changes in the database, provided the data from each request is sent correctly. The separation makes it easier to have the front and the back on different servers, making the apps more flexible to work with.
With a REST API, you can have PHP, Java, Python, or Node.js servers. The only thing is that it is indispensable that the requests’ responses should always take place in the language used for the information exchange, normally XML or JSON.
A REST API message contains these components: