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Authorization and Authentication

Explore the fundamental concepts of user authentication and authorization using JSON Web Tokens. Understand how to validate user identity, manage permissions, and secure web applications through secure sign-up, login flows, and token handling.

User authentication and user authorization are some of the most essential building blocks of most web applications. The majority of websites on the internet identify us through authentication and then provide us with the resources we are authorized to access.

Authentication

Authentication is the process of a website or application validating a user’s identity. A typical example of authentication is the login and sign-up features that exist in most web applications and websites. For instance, we can’t access the Educative courses until we log in with a valid account.

Authorization

Authorization is the process of a website or application verifying our permission to access resources. For example, the website administrator may be able to access all of the website’s resources, but the regular user can only ...