About This Article
This article is created using an automated generation workflow leveraging generative AI. Microsoft Teams licensing updates and the official Licensing FAQ were reviewed as of September 17, 2026, to organize the relationship between E3/E5 and Teams according to the current SKU structure.Verification Status: 📘 Official Information Confirmed / Hardware Not Tested
Microsoft Teams is a collaboration platform that integrates chat, meetings, calls, teams/channels, file co-authoring, and various Microsoft 365 apps as an entry point. However, in E3/E5 for 2026,we can neither say that "Teams is always included with E3/E5" nor that it is "always sold separately". Because Enterprise suites with and without Teams both exist, you need to check your contracted SKUs.
Where to Look First in 2026 Licensing
Starting November 1, 2025, Microsoft has resumed worldwide sales of Microsoft 365 E3/E5 Enterprise suites including Teams. Meanwhile, suites without Teams and standalone Teams Enterprise licenses also exist.
| Contract | Teams |
|---|---|
| M365 E3/E5 with Teams | Included |
| M365 E3/E5 no Teams | Not included |
| no Teams + Teams Enterprise | Used in combination |
Because conditions may vary depending on the contract name, renewal timing, region, and channel, verify actual assignments in the admin center and review your contract documents.
Try This First: Understand Boundaries with a Single Test Team
Team: M365-Lab Channel: General 投稿: テストメッセージ ファイル: test.txt
Check This
Confirm that the "Files" tab in a channel is not isolated Teams-only storage, but integrates with other Microsoft 365 services. Teams acts as the entry point, while files, calendars, identities, and compliance are handled in combination with SharePoint/OneDrive, Exchange, Entra, Purview, and others.
Change One Thing
Add one standard channel and separate its use case from the General channel. Defining "who talks about what and where" before adding more channels makes it easier to maintain searchability later.
For Business Use
Consider designing whether any user can create Teams without restrictions
Ensure there are at least two owners
Distinguish between external access and guest access
Understand where the master copy of files resides
Separately verify conditions for meeting recordings, transcription, and Copilot usage
Check DLP, retention, and auditing designs before pasting sensitive information into chat
Decide whether app additions should be left to users or managed via permission policies
Points for Administrators to Verify
SKUs with/without Teams and service plans
Teams admin center policies
Guest and external access
Meetings, recordings, and transcription
App permissions
SharePoint/OneDrive sharing settings
Purview retention, DLP, and auditing
Message center and Roadmap
Additional Precautions from April 2026 Onward
Microsoft has updated event capabilities and other features in Teams Enterprise starting April 1, 2026. Because additional features like Teams Premium are also subject to change, do not rely solely on the memory that "it used to require an additional license" or "was included." Instead, check the latest Service Description for each specific feature you intend to use.
Official and Primary Sources
Microsoft 365 and Teams licensing update: https://www.microsoft.com/en-us/licensing/news/Microsoft365-Teams-2025
Microsoft Licensing FAQ – Teams: https://www.microsoft.com/licensing/faqs/10
Teams add-on licensing: https://learn.microsoft.com/en-us/microsoftteams/teams-add-on-licensing/assign-teams-add-on-licenses
When adopting Teams, chat usage is not the only important factor.Understanding boundaries, using Teams as an entry point, all the way down to the underlying services such as SharePoint, Exchange, Entra, and Purviewforms the foundation of operational design.
