Once upon a time, security was... a login form. But woh! Not anymore! Sure, we
still have login forms, but we also have JWT authentication, OAuth, two factor
auth, SSO implementations and anything else you can dream up.

Let's look at some real-world examples of solving these challenges using the latest
features & best-practices of Symfony's security component. This will include your
User class, user provider, Guard and a lot of tips to create complex authentication
systems *and* best practices for making sure your application *stays* secure.