Next.js Authentication System Implementation - Email, Password and OAuth2

Learn to build a production-ready authentication system from scratch in this comprehensive 2-hour video tutorial. Master the implementation of email/password authentication, OAuth2 integration, cookie handling, and session management in Next.js without relying on external libraries. Follow along with detailed diagram explanations and practical code demonstrations covering essential topics like user sign-up, login logic, session management, and private page protection using Next.js middleware. Explore advanced security features including state management and code verification while implementing OAuth authentication for multiple providers such as Discord and GitHub. Gain hands-on experience through step-by-step guidance in creating a secure, scalable authentication system complete with user data handling, cookie management, and generic OAuth client implementation.