Not only do you likely have access to all the other Microsoft stuff if your company is using teams, teams uses sharepoint for file sharing. If you use only teams for 2 years and one day login to office365.com, you’ll probably be surprised with the main screen that shows the files you’ve shared (without context, they’re just sitting there) and you’ll probably also be able to see what files your colleagues are sharing and working on.

It means quite literally what it says - if you have office 365 you most likely have all your data in the MS cloud sharepoint. MS also has a separate government cloud.