The difference between OneDrive and SharePoint comes down to who owns the file. OneDrive is your personal storage in Microsoft 365: files there belong to your account, and nobody else sees them until you share them. SharePoint is where a team or department keeps shared files: those files belong to a site, and people get access because they are members of that site. Microsoft Teams uses both, and where a file ends up depends on whether you share it in a chat or in a channel.
Once you know which is which, you spend less time searching for files and fewer documents end up in the wrong place.
What OneDrive is for
OneDrive is linked to you as a person. Think of it as your own work folder in the cloud. It suits drafts you are still working on, notes, personal templates and any file that only you need.
You can open your OneDrive files in the browser, on your phone and on your computer through the OneDrive sync app. Changes sync between devices, so the version on your laptop matches the one you open on your phone.
You can share a OneDrive file with a colleague. The file still lives in your OneDrive, though. You stay its owner, and the people you share it with can reach it only through the link or the access you gave them.
What SharePoint is for
SharePoint is linked to a group of people. A team, project or department gets a SharePoint site, and that site holds a document library for its shared files.
Files on a SharePoint site belong to the site and stay there when one person moves on. That makes SharePoint the right place for anything the team relies on: contracts, project plans, procedures, final versions.
The OneDrive sync app on your computer can also sync SharePoint libraries. A large part of the confusion starts there: you see SharePoint folders in File Explorer next to your own OneDrive folders, so the two look like one storage location. They are still separate, with separate owners and separate access.
Who has access to your files
Access works differently in each.
In OneDrive, you decide. A file is private until you share it, and you choose who gets a link and whether they can view or edit. Which link types you can use, such as links for specific people or links for everyone in your organisation, depends on the settings your Microsoft 365 administrator has chosen.
In SharePoint, access comes from the site. People who are members of the site can work with its files. Site owners manage who is a member and can give visitors read access. When someone joins the team, they get access to the existing files in one step, without anyone sharing each file separately.
That difference matters when people change roles. A file shared from your OneDrive depends on you keeping that sharing in place. A file in a SharePoint library stays available to whoever is a member of the site.
Where do Teams files end up?
Teams stores files in OneDrive or SharePoint depending on where you share them.
Files you share in a channel go to the SharePoint site behind that team. Every team has one, and each standard channel has its own folder in the site’s document library. Everyone in the team can open those files, also from SharePoint itself.
Private and shared channels get their own separate SharePoint site. Only the people in that channel see those files.
Files you share in a one-to-one chat or a group chat go to your own OneDrive, in a folder called Microsoft Teams Chat Files. Teams shares the file with the people in the chat. You remain the owner, because the file sits in your OneDrive.
In practice: share a file the whole team needs in a channel, and use a chat for something you want to show one or two colleagues quickly.
What happens to files when someone leaves
This is where the choice between OneDrive and SharePoint has the biggest consequences.
A OneDrive belongs to one user account. When that account is removed, the files in it are kept for a limited time and then deleted. Your Microsoft 365 administrator sets that retention period. During that period an administrator can give someone else access, but the files no longer have an obvious home.
Files in a SharePoint library belong to the site. When a team member leaves, the files stay where they are and the rest of the team keeps working with them.
So if a file matters to more people than you, move it to SharePoint, or share it in a Teams channel, before it becomes something only your account holds.
OneDrive or SharePoint: a quick way to choose
Ask yourself one question when you save a file: who needs this, now and later?
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Only you, for now: save it in OneDrive.
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Your team, project or department: save it on the team’s SharePoint site, or share it in a Teams channel, which puts it there.
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One or two colleagues, for a quick look: share it in a Teams chat or with a sharing link from OneDrive, and move it to SharePoint once it becomes team material.
A common pattern is to start a draft in OneDrive and move it to the SharePoint site once it is ready for the team. Your own workspace stays tidy, and the team always knows where to find the final version.
