You must have heard this word Oauth if you are from a development background. It is because of its popularity, in a few past years technology has evolved a lot and so the security. With increasing concerns of security, a lot of frameworks and patterns came into the picture and Oauth was one of them. When developers started using Oauth, they found it very secure and useful, and with increasing popularity, so many organizations started using this.
Now, you will notice that millions of applications are now powered by the Oauth authorization framework. It's important that you know what it is all about and I think that's why you are reading this article.