[bombcar]

Office 365 online has a pretty decent multiplayer Excel setup - it has limitations but in general it works pretty well. Great for document reviews/edits (works for Word and Powerpoint as well).

[jacobdi]

Yes, 365 has definitely elevated Excel's collaboration. But in my experience, it has speed issues that can cause more problems than it solves.

[mathattack]

It’s been a disaster for us. Seems like Smartsheet and Google sheets shouldn’t exist, but multi-person collaboration in Office is a disaster.