Hi there! From experience we know how hard auth* systems can be. There are a million ways to get what you want. We also see the issue that developers usually start with a least-effort approach (username + password) which needs refactoring later on. The intention of these articles is to give you an overview of what exists and help you choose the best approach with as much information as you can get. We hope that this…
(Not convinced about "ultimative" though. I'm assuming you were going for a portmanteau of "ultimate" and "definitive", but I suspect a lot of people are just going to read it as "ultimate" and subsequently remember/Google the wrong thing.)