---
title: "Team communication market share 2026: Microsoft Teams 72.3%, Slack 22.7%"
description: "Team communication market share across 1.7M+ companies, by company size, with who switches to whom."
url: https://www.incumbently.com/market-share/team-communication
---

Market share · Last verified Nov 6, 2026

# Team communication market share Across 1.7M+ companies.

Across the 1.7M+ company installs we see in Team communication, Microsoft Teams leads with 72.3%, followed by Slack at 22.7%. Shares count companies, not revenue.

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1.7M+ Company installs in Team communication

72.3% Microsoft Teams share

4 Vendors compared

Share

## Share of companies.

[Microsoft Teams](https://www.incumbently.com/companies-using/microsoft-teams) 72.3%

[Slack](https://www.incumbently.com/companies-using/slack) 22.7%

[Zoom](https://www.incumbently.com/companies-using/zoom) 3.1%

[Webex](https://www.incumbently.com/companies-using/webex) 1.9%

| Vendor          | Companies | Share |
| --------------- | --------- | ----- |
| Microsoft Teams | 1.2M+     | 72.3% |
| Slack           | 390K+     | 22.7% |
| Zoom            | 55K+      | 3.1%  |
| Webex           | 33K+      | 1.9%  |

Switching

## Who moves to whom.

Companies that stopped using one vendor and started using another since Nov 6, 2025\. Darker cells mean more switches.

From ↓ · To → Microsoft Teams Slack Zoom Webex Microsoft Teams — n/a n/a n/a Slack 0 — 1 0 Zoom 0 0 — 0 Webex 20 7 17 —

n/a: we don't see drops for Microsoft Teams yet, so moves away from it aren't counted. Moves to it are.

By company size

## Share by company size.

51–200 staff

Microsoft Teams 49%

Slack 42%

Zoom 6%

Webex 3%

201–500 staff

Slack 45%

Microsoft Teams 44%

Zoom 6%

Webex 5%

501–1,000 staff

Slack 48%

Microsoft Teams 39%

Zoom 7%

Webex 6%

1,001–5,000 staff

Slack 49%

Microsoft Teams 35%

Zoom 8%

Webex 8%

5,001–10,000 staff

Slack 51%

Microsoft Teams 31%

Webex 9%

Zoom 8%

10,001+ staff

Slack 53%

Microsoft Teams 27%

Webex 10%

Zoom 9%

How we count

## Every signal behind the numbers.

Agent scanning · 01 / 78 **MX records** Domain names `Microsoft 365 behind Mimecast`Shows adoption

Domain names **9**

Subdomains and tenants **7**

Certificates **4**

Website and app **12**

Hiring **8**

People **6**

Company news **7**

Vendors and partners **7**

Public records **6**

Code and infrastructure **8**

Incumbent events **4**

Questions

## Team communication market share, answered.

Microsoft Teams, with 72.3% of the 1.7M+ company installs we see in Team communication. Slack is second at 22.7%.

By the number of companies where we see each tool in use, not by revenue or seats. A company that uses two of these tools counts for both.

The vendors

[Companies using Microsoft Teams**1.2M+** ](https://www.incumbently.com/companies-using/microsoft-teams)[Companies using Slack**390K+** ](https://www.incumbently.com/companies-using/slack)[Companies using Zoom**55K+** ](https://www.incumbently.com/companies-using/zoom)[Companies using Webex**33K+** ](https://www.incumbently.com/companies-using/webex)

Head to head

[Microsoft Teams vs Slack](https://www.incumbently.com/compare/microsoft-teams-vs-slack)[Microsoft Teams vs Zoom](https://www.incumbently.com/compare/microsoft-teams-vs-zoom)[Microsoft Teams vs Webex](https://www.incumbently.com/compare/microsoft-teams-vs-webex)[Slack vs Zoom](https://www.incumbently.com/compare/slack-vs-zoom)[Slack vs Webex](https://www.incumbently.com/compare/slack-vs-webex)[Zoom vs Webex](https://www.incumbently.com/compare/zoom-vs-webex)

[Market share Every category we track ](https://www.incumbently.com/market-share)Related

Your turn

## Track the Team communication market.

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