Yep. Similarly, Microsoft Entra... if you want Office, you're getting it anyway. Might as well use it for SSO, right? And here's your free Teams license... how can you justify paying for Slack when we've a perfectly good chat client at home?

I tried for a while to get Entra working with an external identity provider (Google Workspace).

The other way around worked (Google could use Entra) but it was basically impossible to backend Entra from Google. Weird.