Azure ADB2C or EasyAuth

Hi  I was wondering if someone could advise on the best technology for managed social login for a web app (SPA) with an api hosted in Azure Web Apps.

Azure ADB2C seems to provide a comprehensive solution, but web apps also have what used to be called EasyAuth (I think it's called Authorization/Authentication now). There seems to be a bit of an overlap between the two, I was wondering if someone could outline the pros and cons of each in the context of SPA app.

Many thanks