If you use iOS/macOS, FantastiCAL brings my SSO Outlook and my personal Google calendar together very neatly. The only thing that bugs me about it is setting up

If you use iOS/macOS, FantastiCAL brings my SSO Outlook and my personal Google calendar together very neatly. The only thing that bugs me about it is setting up meetings at work, I still need to route through Outlook directly - but all other integrations work well. Since I'm an IC and never ever schedule meetings unless I really must, this hasn't been much of a pain for me.