Marc is the CTO of Tremolo Security, he’s been doing authentication for more than 20 years, long before many of us even knew this whole identity and authentication thing was something we should care about. Rather than trying to add all the services yourself and support the various differences you get from every possible authentication provider, you can use an authentication proxy. Marc taught me a bunch of new things, some because there are better ways to do it (authentication proxy), some because I just didn’t totally grasp how something could work (How SAML can look like OIDC was news to me).