I have an Dotnet Core API application which uses IdentityServer4 as IDP. The frontend is built in Angular.
Now, I need to connect to Successfactors of one of my client. I understand SAML is the best federation protocol there.
Please suggest what should be my approach here and relevant tutorials that I can follow. I am not getting good google results.
You need a SAML stack.
Microsoft does not have one. So you need to integrate a third-party product.
There are a number of examples here.