Neon has redesigned its Neon Auth architecture by integrating Better Auth's technology, allowing users to maintain ownership of their authentication identity within their systems. This integration emphasizes the importance of keeping the identity layer close to the rest of the architecture to ensure seamless interaction with business logic, schema design, and data ownership. By keeping the user model inside the architecture, businesses can more effectively manage permissions, multi-tenancy, and audit logs, reducing the complexity and constraints that can arise from outsourcing authentication. Better Auth handles the intricate aspects of authentication, such as session management and security, while allowing users to retain control over their identity model, ensuring it evolves naturally with the rest of their system. This approach is especially beneficial for multi-user applications, where the identity layer must support complex relationships and flows.