API is an acronym for Application Programming Interface, and it's a developer tool which can be found with the use of technologies from computer programming to mobile or web applications. This article provides you with some free APIs through which you can practice your abilities in this area.

Let's start with an example, Let's start with an example, You have to integrate maps in your app for the ordering system. So you can't build your own map system it will require billions of dollars to build and a lot of time. So you will decide to use another company's map service like Google Map

Google Maps won't share code and data with you to integrate the map system into your app.

Google will build a system that can be used by other companies so you can use the system and their code and data will remain private.

So Google will create APIs for whatever feature is required by their customer the like:

Get user location
Get the delivery boy's location
Find user city
and other awesome features

"API(Application Program Interface) is a type of software interface that allows other pieces of software to interact with one another."

How does API Work?

To authenticate the user token is generated and given to the user. You can create an internal API system for your company to reuse the code with other apps.

A real-world example of APIs:

Facebook API
Twitter Bots
Weather API's
Google Auth
Amazon Alexa
GPT 3
Grammarly

Free APIs examples for Practice

Public APIs - https://github.com/davemachado/public-api
ReqRes - https://reqres.in/
Binance - https://github.com/binance/binance-spot-api-docs/blob/master/rest-api.md
Data USA - https://datausa.io/
Open Library - https://openlibrary.org/developers/api