REST stands for REPRESENTATIONAL STATE TRANSFER. It is an architecture style for designing networked applications. It works by relying on a stateless, client-server communication protocol which in almost all cases is the HTTP.
REST was made to treat objects on the server side as resources that can be created, updated and destroyed and of course read. Example of this, is a blogpost, and it is usually stored in a database. We can create request with the 'POST' request, also delete with the 'DELETE' request.
What makes REST awsome is that it can be used virtually by any programming language like Javascript, php, Ruby and Rails, Java, Python and so on. All these languages are capable of working with REST APIs.

NOTE: The API is the messenger and then REST helps us to use the HTTP request to format that message.

REST APIs takes in multiple types of HTTP request.

TYPES OF HTTP REQUESTS

GET: Retrievs data from a specified resource

POST: this is usually used to submit data to be processed to a specific resource. i.e to add a post to a database or to add a user account.

PUT: This is used to update a specific ressource already on the server.

DELETE: This is ofcourse used to delete a specified resource on the server.

other types of HTTP Requests

HEAD: Same as 'GET' but does not return a body

OPTION: Returns the supported HTTP methods of a specific server or API

PATCH: Update partial resources. It is similar to 'PUT'

API ENDpoints

When using some APIs [self created or external] you are going to have something called 'ENDpoints'.

// this serves as comments

GET someurl.com/api/users // Get all users

GET someurl.com/api/users/1 // Get single users

POST someurl.com/api/users // Add users

PUT someurl.com/api/users/1 // Update user

DELETE someurl.com/api/users/1 // Delete user

NOTE: It's completely up to the APIs how they want to format the URLs and the number '1' is an id passed unto the url. It's not conistant but varies.

Credits: Brad Traversy aka Traversy Media.