It starts so innocently. Someone creates a team for a project. A colleague creates one for the Friday drinks. A third creates a team with a name almost identical to the first. Two years later, you have hundreds of teams, and no one knows where anything is anymore.
Proliferation in Teams is not a technical issue. It is the result of missing agreements. The good news: with Teams governance, you solve that without holding people back.
Why proliferation is a problem
- Searching: employees don't know which team or document is up-to-date.
- Security: teams without an owner often have outdated members and guests.
- Copilot: messy teams and sites provide messy answers.
- Costs and storage: old data remains indefinitely.
Five pillars of Teams governance
1. Who can create a team?
Everyone, or only a certain group? An intermediate form often works best: everyone can request a team, with a short check.
2. Naming
With a naming policy, you immediately see what a team is. For example, a prefix like *PRJ-* for projects or *DEPT-* for departments.
3. Ownership
Each team has at least two owners. If an owner leaves, a new one is appointed.
4. Lifecycle
With an expiration policy, owners must periodically confirm that a team is still needed. Not confirmed? The team is archived or deleted. Deleted teams can be restored for a time.
5. Guests and external access
Determine per team type if guests are welcome. With sensitivity labels on teams, you can enforce this automatically.
Templates help
With team templates, you give each new team a fixed structure. A project team automatically gets channels like *Planning*, *Documents*, and *Meetings*. This avoids rethinking and ensures recognizability.
Governance should not be a hindrance
Too strict rules are counterproductive. Can't an employee create a team? Then they'll work in WhatsApp or a private Dropbox. Good governance makes it easy to do the right thing.
Cleaning up before you start
Already have proliferation? Start with an inventory:
- Which teams have no or only one owner?
- Which teams have been inactive for months?
- Which teams are similar?
Archive what's done, merge what's duplicate, and appoint owners where they are missing.
Collaborating with structure
At 365 Angels, we help organizations set up a collaborative environment that remains clear. With governance, security, and insight into usage. From SharePoint and OneDrive to Teams.
Has your Teams environment gotten out of hand? Schedule a conversation and we'll help you regain clarity.
Frequently Asked Questions
Are archived teams lost?
No. An archived team is read-only and remains searchable. You can reactivate it later.
What license do I need for a naming policy?
Naming and expiration policies require Microsoft Entra ID P1 for the involved users.
How many teams is too many?
There is no magic number. It's about each team having a purpose, an owner, and active members.



