Incidentally we just shipped something for this. Rather than having to make a 204-page PDF, you can go into SSOReady, generate a setup URL, and give it to customers. Customers can visit that URL and they get a self-serve UI for configuring their SAML connection to your product.
https://ssoready.com/docs/idp-configuration/enabling-self-se...
One of the biggest challenges is our users tended to need to pull in a different department, that actually owned the SSO system. They had little incentive to hustle to get things to work, so there’s tickets would often drag on for ages.
We’d loom bad because we’d need certain information from our customer.
Seems reasonably easy to use and a good platform to build a SaaS