The SAML world is definitely a fun mess. We’re[1] building out SAML support and are beta testing it with a few customers and it is funny how different even the large IDPs are. Add in things like needing to test the integration, making sure attribute and role mappings are correct, and it’s unfortunate but understandable that companies not specializing in auth wouldn’t want to deal with it except for customers that pay a lot.

[1] Disclaimer, I’m a founder of PropelAuth