If your business runs on Microsoft 365, you have two places to store files, and most people were never told the difference. So files end up wherever was easiest at the time, scattered across OneDrive, SharePoint, Teams, and somebody’s desktop.
That is how you get the familiar problems. A document nobody can find. A file only one person can open. A scramble to recover somebody’s work after they resign. The rule for where things belong is straightforward once you know what each tool is for.
What each one is actually for
OneDrive is your own space. Think of it as the cloud version of the Documents folder on your computer. Your drafts, your working files, private to you unless you choose to share them.
SharePoint is the team’s space. It is built for files with shared ownership, the documents your practice group, department, or whole firm works on together.
Microsoft’s own guidance is about as simple as it gets: if you are working on something by yourself, save it to OneDrive. If you are working as a team, save it where the team works.
Where Teams fits
Microsoft Teams confuses this for a lot of people, because it looks like a third storage location. It is not. When you upload a file to a Teams channel, it is stored in that team’s SharePoint site. The Files tab in Teams is a view into SharePoint.
So if your team works in Teams, your shared files are already in SharePoint whether anyone realized it or not. That is a good thing, because it means those files belong to the team rather than to one person’s account.
The rule
If it is your own draft or something only you need, keep it in OneDrive.
If more than one person works on it, if the team needs it, or if it is a client or matter file, it goes in SharePoint or the Teams channel for that work, which is the same place.
And nothing important lives only on somebody’s desktop or only in their personal OneDrive.
Where a file lives changes how you share it
When you share from your own OneDrive, you are sending people into your personal space with a link tied to your account. It works, but it depends on you. If you leave the firm or the file moves, those links break and everyone who relied on them is stuck.
In SharePoint or a Teams channel, the right people already have access, because the files belong to the team. You point a colleague at the folder and they are in, with no one-off links to manage.
It is also worth sharing a link rather than emailing a copy. When everyone opens the same file, everyone sees the current version, and you avoid five slightly different drafts attached to five different emails. For confidential documents there is a security argument too: an attachment is a permanent copy in someone else’s mailbox that you cannot revoke, while a link can be scoped to one person, given an expiry date, and switched off when the matter closes.
Why this matters more than it sounds
Departures. A personal OneDrive is not shared by default, so important work kept only there can be difficult to reach. Microsoft retains a deleted user’s OneDrive for 30 days by default and grants the manager access, but that turns an orderly handover into a race against a clock. Files in SharePoint stay with the team regardless of who comes or goes. For a firm where matter files carry professional obligations, that difference is not administrative convenience, it is risk.
Findability. When the team’s documents live in one shared library, people know where to look instead of hunting through inboxes and personal drives.
Recovery. Both OneDrive and SharePoint keep version history and a recycle bin, so an overwritten document or a file scrambled by ransomware can be rolled back to a clean copy. That is genuinely useful, and it is also the single most misunderstood thing in Microsoft 365. Version history is not backup. It has limits, it can be defeated, and it does not survive a deleted site or an expired retention window. Microsoft 365 Backup is a separate control, and every client we manage runs it.
Getting there from here
Put shared work in SharePoint or Teams and keep it out of one person’s OneDrive. Leave OneDrive for drafts and personal work. Get important files off local desktops, since a file that exists only on a laptop is not shared, not backed up, and gone when the laptop is. The sync client keeps a local copy on the device for offline work while saving changes back to the cloud, so people can keep working the way they always have.
Then agree where things go. One shared sentence, like “client files live in the client’s SharePoint folder,” prevents a remarkable amount of confusion.
If your files are currently spread across all four places and nobody is quite sure which copy is current, that is a normal starting point and a fixable one. Worth a conversation.