Head to head · Last verified Nov 6, 2026
Microsoft Teams vs Slack Who uses which, and who's switching.
We see 1.2M+ companies using Microsoft Teams and 390K+ using Slack. In the last 12 months, 12K+ started on Microsoft Teams and 1,800+ on Slack. 0 moved from Microsoft Teams to Slack, and 0 the other way.
1.2M+Companies using Microsoft Teams
390K+Companies using Slack
Switched between them
Over time
New customers, month by month.
Switching
Who moves which way.
Companies that stopped using one and started using the other since Nov 6, 2025.
Microsoft Teams
By company size.
Slack
By company size.
Microsoft Teams
Top industries.
Slack
Top industries.
Questions
Microsoft Teams vs Slack, answered.
Microsoft Teams is used by more of the companies we see: 1.2M+ against 390K+.
In the last 12 months, 12K+ companies started using Microsoft Teams and 1,800+ started using Slack.
Since Nov 6, 2025, 0 moved from Microsoft Teams to Slack and 0 moved from Slack to Microsoft Teams.
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