Teams vs SharePoint for File Storage: What Goes Where?

Teams and SharePoint are not really alternatives for file storage, because Teams stores its files in SharePoint behind the scenes. When you upload a file to a Teams channel, it goes into a SharePoint document library connected to that team. So the real question is not "Teams or SharePoint?" but "should this content live in a Team, or in a SharePoint site on its own?" The answer depends on whether the files are tied to active collaboration or are reference material the business keeps.

Key facts

• Every Microsoft Teams team is backed by a SharePoint site; the Files tab in a channel is a SharePoint document library.
• Uploading a file in Teams and uploading it to the team's SharePoint site put it in the same place.
• Teams suits active, conversational collaboration; standalone SharePoint sites suit reference libraries and structured records.
• Creating a Team for every small project leads to SharePoint sprawl that is hard to govern later.
• Both Teams files and SharePoint sites need a separate Microsoft 365 backup, since native retention is limited.

Does Teams store files in SharePoint?

Yes. This is the fact that resolves most of the confusion: every team in Microsoft Teams automatically gets a SharePoint site, and the files you share in a channel live in that site's document library. There is no separate "Teams storage." When someone drags a document into a channel's Files tab, it lands in SharePoint, and you could open the exact same file by going to the SharePoint site directly.

Once that clicks, the decision gets simpler. You are not choosing between two storage systems. You are choosing whether a set of files should sit inside a Team, where they live alongside chat and meetings, or in a SharePoint site on its own, where they are organised as a library without the conversational layer wrapped around them.

When should files live in Teams?

Files should live in Teams when they are tied to active collaboration: a project the team is working on now, documents that get discussed in channel chat, things people co-edit while talking about them. The value of Teams is that the conversation and the files sit together, so the context around a document is right there next to it.

A marketing team running a campaign, a project group delivering a piece of work, a department coordinating day to day: these are natural Teams. The files matter because the work is live and the people are talking. When the chat and the documents reinforce each other, putting files in the Team is the right call.

When should files live in a standalone SharePoint site?

Files should live in a standalone SharePoint site when they are reference material or formal records rather than the subject of active conversation: company policies, the client document library, HR templates, finance records, anything that is looked up and maintained rather than chatted about. These do not need a Team wrapped around them, and putting them in one just adds noise.

The mistake we see most is treating Teams as the answer to everything, spinning up a new Team for every small project. Six months later there are forty Teams, half abandoned, each with its own SharePoint site, and nobody can find the company policy library among them. A few well-structured SharePoint sites for reference content, with Teams reserved for genuine collaboration, keeps things findable. Our SharePoint document management service exists to get this structure right from the start.

Frequently asked questions

If I delete a Team, do I lose the files?

Deleting a Team also removes its connected SharePoint site, and with it the files, after a retention period. This is a real risk if Teams are created and deleted casually. It is one more reason to be deliberate about when you create a Team, and to have a separate Microsoft 365 backup so a deletion does not become permanent data loss.

Can I access Teams files without opening Teams?

Yes. Because the files live in SharePoint, you can open them through the SharePoint site, through OneDrive sync on your desktop, or through the Office apps, not just through the Teams app. This is handy for staff who prefer working in File Explorer or who do not live in Teams all day.

Should every department have its own Team?

Not automatically. Departments that collaborate actively and benefit from having chat next to their files are good candidates. Departments that mostly maintain reference material may be better served by a SharePoint site without a Team. The right answer depends on how the group actually works, which is worth thinking through before creating Teams en masse.

How do we tidy up if we already have too many Teams?

Start by identifying which Teams are active collaboration and which are really just file dumps that should be SharePoint sites or archived. Consolidate reference content into a smaller number of well-structured sites, archive dead Teams, and set a simple rule for when a new Team is justified. We help businesses untangle this rather than just deleting things and hoping.

If your Teams setup has sprawled into something nobody can navigate, a tidy-up that sorts collaboration from reference storage will make a real difference to how easily staff find things. We are happy to take a look at your Teams and SharePoint and suggest a cleaner structure.