User or account management is a must-have feature in business applications. For examples, one device should be used by many employees and the employees have different roles in the project. The apps must be able to authenticate user, authorize them and let them access the resources corresponding to their roles. We can manage all these things in app databases within our own tables or we can use AccountManager providing access to a centralized registry of the user’s online accounts. With AccountManager, the user enters credentials (username and password) once per account, granting applications access to online resources with “one-click” approval. In this blog post, I would like to make a small demo how we can integrate ASP.NET Identity service for authenticating user with AccountManager. I’ll only focus on addAccount part, the other functions will be discussed in other posts if necessary.