Microsoft Teams reached over 320 million monthly active users by December 2023, and Microsoft has not disclosed a fresh MAU number in the more than two-and-a-half years since. The parent Productivity and Business Processes segment that houses Teams generated $140.0 billion in fiscal-year 2026 revenue, up from $120.8 billion in fiscal 2025.
Microsoft 365 Copilot reached over 30 million paid seats by the end of Q4 fiscal 2026. Those seat-and-segment numbers are now the closest public proxies for Teams’ trajectory, because Microsoft has folded Teams into the Microsoft 365 subscription bundle and reports Microsoft collaboration progress through segment revenue and Copilot paid seats rather than through a standalone Teams user count.
Key Takeaways
- Microsoft Teams stands at over 320 million monthly active users across 181 markets and 44 languages, the last MAU figure Microsoft has publicly restated (March 2024).
- Microsoft holds a 45.6% share of the worldwide UC and Collaboration market, up 2.4 percentage points from 2023, according to the IDC Worldwide Quarterly UC and Collaboration Tracker for calendar-year 2024.
- Microsoft 365 Copilot reached over 30 million paid seats by June 30, 2026, according to Microsoft’s FY26 Q4 press release.
- Nearly 70% of the Fortune 500 now use Microsoft 365 Copilot, the count Microsoft disclosed at Ignite 2024.
- Microsoft’s UC and C revenue rose 14% year-over-year to $31.5 billion in 2024, according to IDC.
- BlackRock signed an enterprise-wide deal for 24,000 Microsoft 365 Copilot seats.
- Productivity and Business Processes revenue crossed $140.0 billion in fiscal 2026, up roughly $19 billion year-over-year.
Editor’s Choice
- Teams MAU last publicly stated: over 320 million (December 2023).
- Worldwide UC and Collaboration market size in 2024: $69.2 billion, up 7.8% year-over-year.
- Microsoft FY26 Q4 revenue: $90.0 billion, up 18% year-over-year.
- Microsoft Cloud revenue for FY26 Q4: $59.3 billion, up 27%.
- Commercial remaining performance obligation: $678 billion, up 84% year-over-year.
- Microsoft 365 Commercial cloud revenue in FY26 Q4: increased 14% on a reported basis (16% when adjusted for prior-year in-period recognition).
- Fiscal 2025 total revenue: $281.7 billion, up 15%, the base year against which FY26 growth compounds.
Microsoft Teams Monthly Active Users: The Disclosure Trail
- Microsoft’s December 2023 Teams year-in-review disclosed over 320 million monthly active users.
- Microsoft’s March 2024 Teams update restated the same over 320 million monthly active users across 181 markets and 44 languages.
- The rebuilt Teams desktop client shipped in October 2023 is up to 2 times faster while using 50% less memory than its predecessor.
- Independent software vendors and enterprises have published more than 2,000 apps in the Teams store.
- Custom line-of-business apps built on the Teams platform total over 145,000 as of December 2023.
- Microsoft’s earnings press releases from FY25 Q1 through FY26 Q4 do not restate a Teams MAU number, referring instead to Microsoft 365 Commercial cloud revenue growth and Copilot paid-seat counts.
| Disclosure date | Teams MAU as disclosed | Source venue |
|---|---|---|
| December 5, 2023 | Over 320 million | Microsoft Teams year-in-review blog |
| March 27, 2024 | Over 320 million (across 181 markets, 44 languages) | Microsoft Teams “Building a Foundation” blog |
| October 30, 2024 – July 29, 2026 | No new MAU disclosure | Microsoft FY25 Q1 through FY26 Q4 earnings press releases |
Source: Microsoft Teams Blog on Microsoft Community Hub, Microsoft Investor Relations earnings press releases
Microsoft Teams Market Share Versus Zoom, Cisco and the Rest
- Worldwide UC and Collaboration market revenue in 2024: $69.2 billion, up 7.8% year-over-year.
- Microsoft’s 2024 UC and C share: 45.6%, up 2.4 percentage points from 2023.
- Microsoft’s 2024 UC and C revenue: $31.5 billion, up 14% year-over-year.
- Zoom’s 2024 UC and C share: 6.2%, down 40 basis points from 2023.
- Zoom’s 2024 UC and C revenue: $4.3 billion, up approximately 1% year-over-year.
- Cisco’s 2024 UC and C share and revenue: 5.3% share (down 70 basis points) on $3.7 billion revenue (down 4.6%).
- Microsoft, Zoom, plus Cisco combined share of the 2024 UC and C market: 57.1%.
By the numbers: The IDC 2024 UC and Collaboration Tracker put Microsoft at 45.6% share on $31.5 billion of UC and C revenue, against Zoom’s 6.2% on approximately $4.3 billion and Cisco’s 5.3% on $3.7 billion. Microsoft alone commands nearly four times the combined share of its two nearest named competitors (IDC, April 2025).
Recent Developments
- July 2026: Microsoft reported FY26 Q4 revenue of $90.0 billion (up 18%) and Microsoft 365 Copilot reached over 30 million paid seats.
- July 2026: Azure revenue surpassed $100 billion for the first time.
- July 2026: Commercial remaining performance obligation increased 84% to $678 billion, a forward-book metric that captures multi-year Microsoft 365 commitments including Teams.
- July 2025: Microsoft’s FY25 Q4 release reported Microsoft 365 Commercial cloud revenue growth of 18% and Microsoft 365 Consumer cloud revenue growth of 20%.
- November 2024: Microsoft disclosed at Ignite 2024 that nearly 70% of the Fortune 500 use Microsoft 365 Copilot.
- April 2025: IDC published its Worldwide UC and Collaboration Tracker showing Microsoft’s 45.6% UC and C share, up 2.4 percentage points from 2023.
Microsoft 365 Copilot and Teams Enterprise Adoption
- Microsoft 365 Copilot paid seats at the end of FY26 Q4: over 30 million.
- Fortune 500 penetration: nearly 70% of the Fortune 500 used Microsoft 365 Copilot by Ignite 2024.
- Named BlackRock deployment: 24,000 Microsoft 365 Copilot seats under an enterprise-wide agreement.
- BlackRock Copilot weekly-active rate: about 60% of BlackRock’s Copilot user population uses Copilot on a weekly basis.
- Copilot appears inside every Teams meeting for licensed users, connecting the paid-seat count directly to Teams meeting inventory rather than to a standalone Teams app.
| Publicly named Copilot deployment | Seat count | Announced |
|---|---|---|
| BlackRock (enterprise-wide) | 24,000 | November 2024 |
| Fortune 500 aggregate | Nearly 70% of the Fortune 500 | November 2024 |
| Microsoft 365 Copilot total (FY26 Q4) | Over 30 million | July 2026 |
Source: Microsoft Ignite 2024 blog (November 19, 2024), Microsoft FY26 Q4 press release (July 29, 2026)
Microsoft Financial Metrics That Frame Teams’ Business
- FY26 Productivity and Business Processes revenue: $140.0 billion.
- FY25 Productivity and Business Processes revenue: $120.8 billion.
- Year-over-year P and BP revenue change: about 15.9%.
- FY26 P and BP operating income: $83.9 billion out of $140.0 billion revenue, implying a segment operating margin of about 59.9%.
- FY26 total Microsoft revenue: $331.8 billion.
- P and BP share of total Microsoft revenue in FY26: about 42.2%.
That annual climb in Productivity and Business Processes revenue plays out inside the same fiscal year, and the FY26 Q4 snapshot below breaks out the quarter that closed it.
| FY26 Q4 metric | Value | Year-over-year change |
|---|---|---|
| Total revenue | $90.0 billion | Up 18% |
| Microsoft Cloud revenue | $59.3 billion | Up 27% |
| Commercial RPO | $678 billion | Up 84% |
| Microsoft 365 Commercial cloud revenue (reported) | Growth of 14% | Adjusted 16% |
| Microsoft 365 Copilot paid seats | Over 30 million | New disclosure line |
Source: Microsoft FY26 Q4 press release, July 29, 2026
Microsoft 365 Consumer Reach and What It Says About Personal Teams Use
- Microsoft 365 Consumer cloud revenue in FY25 Q1: grew 6% (up 7% in constant currency).
- Microsoft 365 Consumer cloud revenue in FY25 Q4: grew 20%.
- Microsoft 365 Consumer cloud revenue in FY26 Q4: increased 24% (up 22% in constant currency).
- The Microsoft 365 Consumer bundle is the primary channel for personal-tier Teams access, and its cloud-revenue growth is one of the few standalone reach signals Microsoft still discloses quarterly.
- Consumer cloud growth outpaced Commercial cloud growth in FY26 Q4.
Companies and Organizations Using Microsoft Teams
- Fortune 500 penetration by Ignite 2024: nearly 70% of the Fortune 500 use Microsoft 365 Copilot, the Copilot license that includes Teams.
- Named enterprise Copilot customer: BlackRock, with an enterprise-wide deal for 24,000 Microsoft 365 Copilot seats.
- Teams platform reach: over 320 million monthly active users across 181 markets and 44 languages.
- Ecosystem breadth: more than 2,000 apps in the Teams store and more than 145,000 custom line-of-business apps built by enterprises.
- Copilot ecosystem: about 60% of BlackRock’s Copilot user population uses Copilot on a weekly basis, an unusually specific engagement rate for a named customer.
| Teams ecosystem metric | Value | Source date |
|---|---|---|
| Monthly active users | Over 320 million | March 2024 |
| Markets served | 181 | March 2024 |
| Languages supported | 44 | March 2024 |
| Apps in the Teams store | Over 2,000 | December 2023 |
| Custom line-of-business apps | Over 145,000 | December 2023 |
| Fortune 500 on Microsoft 365 Copilot | Nearly 70% | November 2024 |
Source: Microsoft Teams Blog (December 2023 and March 2024) and Microsoft Ignite 2024 announcement (November 19, 2024)
Microsoft Teams on Mobile, Desktop and Android
- Teams runs across desktop, mobile, and web clients under the same Microsoft 365 license, so per-platform MAU splits are not publicly reported by Microsoft.
- The rebuilt Teams desktop client that shipped in October 2023 is up to 2 times faster while using 50% less memory than its predecessor.
- Teams is available on Android and iOS through the Google Play and Apple App Store, and Microsoft 365 Consumer subscribers can install the mobile client without an additional license.
- Microsoft has not restated a per-platform user split since folding Teams’ mobile and desktop clients under the same subscription in 2023.
Why it matters: The rebuilt Teams desktop client, shipped in October 2023, is up to 2 times faster than the client it replaced while consuming 50% less memory, per Microsoft’s Teams blog. That client is the code base for the over 320 million monthly active users running Teams across Windows desktops and the Teams Android and iOS apps (Microsoft Teams Blog, March 2024).
Can my employer track my activity on Microsoft Teams?
Yes, within the bounds set by the tenant administrator. The Teams admin center exposes usage reports covering meeting, chat, and call activity per user, subject to tenant retention settings and regional privacy law.
Where do administrators find the Microsoft Teams user activity report?
Administrators find Teams activity data in the Microsoft 365 admin center reports section and in the Teams admin center directly, typically covering the last 7 to 180 days of meeting, chat, and call metrics.
How can I see my own Microsoft Teams activity history?
Individual users review recent activity through the Teams client’s Activity feed (notifications, mentions, meeting invites). That view does not include the tenant-wide telemetry that feeds Microsoft’s public numbers or an administrator report.
Conclusion
Microsoft Teams stays the biggest workplace-collaboration surface on the internet by revenue and by market share, even as the standalone MAU disclosure holds at over 320 million (December 2023). Reporting has shifted to Microsoft 365 Commercial cloud growth, Microsoft 365 Copilot paid seats over 30 million, and a $678 billion commercial remaining performance obligation. IDC’s 45.6% UC and Collaboration share and the FY26 $140.0 billion Productivity and Business Processes segment revenue are now the two cleanest external proxies for Teams’ health, and both moved decisively upward in this report’s window.
The forward view is a seat-and-segment view, not a MAU view. Enterprises evaluating collaboration platforms should track Copilot paid-seat additions and Microsoft 365 Commercial cloud revenue growth as the numbers Microsoft has committed to reporting on the cadence Teams MAU used to be.
