Can someone explain the relationship between Identity and IdentityServer?
No direct connection: ASP.NET Identity is a membership provider (i.e. a way to manage your users), while IdentityServer is an OAuth2 / OpenID Connect server that you can use to support token authentication.
However, IdentityServer4 ultimately supports ASP.NET Identity 3 as a membership repository.
Can I use Identity 3 in my project without using this IdentityServer?
Of course, you can use an ASP.NET identifier without an IdentityServer (and vice versa).
source share