Building an authentication API with NextAuth.js

The tutorial outlines how to implement authentication in Next.js applications using NextAuth.js, an open-source solution designed specifically for Next.js and serverless environments. It provides a step-by-step guide on setting up an authentication API, which includes email sign-in and OAuth with Google, while using MongoDB to store user information. The tutorial covers creating and securing dynamic API routes in Next.js, utilizing the NextAuth.js <Provider> for session management, and protecting both server-side and client-side routes. Additionally, it addresses common issues, such as GitLab OAuth callback errors, and suggests ways to customize user experiences, like redirecting users post-sign-in. The guide also introduces LogRocket for monitoring and debugging Next.js applications, offering a comprehensive approach to enhance authentication and user experience in modern web applications.