Comment by bux93

Do you see "personal" and something that looks like your name in the path? That's your personal onedrive, like your home directory on a unix system.

See "sites" in the URL? That's a sharepoint site (AKA teams "shared" folder).

The former disappears (after a year) when the user license is removed. The latter is not associated with an individual user, so even if everyone in a team leaves the company it isn't just automatically removed.

Following was wrong and had been edited: The non-business personal onedrive was a box.com/dropbox/g-drive competitor. Microsoft moved its backend to Sharepoint at some time. (Onedrive for business used Sharepoint from the get-go). The integration of the personal drive, even though it's a descendent from the 'for business' product, is still quite unintuitive in my opinion.