MEN Stack Session Auth Concepts

Learning objective: By the end of this lesson, students will have a clear understanding of the role and importance of authentication in full-stack development.

What is Authentication

At its core, authentication is the process of verifying a user’s identity. It’s like asking, “Are you really who you claim to be?” In practical terms, this involves implementing a system where users can create an account with a username and password. Then, whenever they wish to access certain features or data on our site, they must provide the correct password to prove their identity and continue.

Why use Authentication

As our applications grow more complex, with databases and relationships, it becomes vital to ensure that users can interact only with data that’s relevant to their account. This is where authentication plays a critical role. It’s the logic that identifies users, granting them access to create, view, or modify content specific to their profile. Without authentication, we risk exposing sensitive data or allowing unauthorized modifications, which could compromise the integrity and security of our application and its users.