Identity Market: Don't Build Login Pages Again: Centralized Auth

The article argues that repeatedly rebuilding login and user/role management across projects is inefficient and error-prone. It describes a common pattern where teams duplicate authentication code across multiple apps, leading to duplicated bugs and maintenance burdens. Two solutions are compared: (1) create a reusable login/user-management module/library to import into projects, and (2) build a separate centralized application (service) that handles authentication, users, roles, and exposes an API for other projects. The author favors the centralized application approach and cites existing services (Auth0, Firebase Authentication, Clerk) as examples, then introduces Roled — a centralized user and role management platform — with links to its site and quickstart documentation.