Authentication versus Authorization

See When you log on to a PC with a user name and password you are authenticating. Authorization is the process of verifying that you have access to something. Gaining access to a resource (e.g. directory on a hard disk) because the permissions configured on it allow you access is authorization. Like on a system only admin is authorized to change system setting. In RestAssured multiple type of form Authentications (Oauth and Oauth 2.0)  are present. We covered that in the Module 17 using APIs from twitter and paypal.