Looking for an open-source way to implement 𝗦𝗦𝗢 in ASP.NET Core? This guide shows how to build a central authentication system using 𝗢𝗽𝗲𝗻𝗜𝗱𝗱𝗶𝗰𝘁, a free alternative to Duende Identity.

It includes:
  • A working AuthServer and MVC client
  • Login and consent pages
  • Proper handling of first-time login flows