Microsoft Teams vs Slack
Compare Microsoft Teams and Slack on features, pricing, and buyer fit using the same researched criteria.
Microsoft Teams
M365 collaboration hub (chat, meetings, files) with optional Teams Phone telephony add-on — free Teams tier exists; Phone Standard ~$10/user/month annual plus PSTN.
Best for
- • Organisations standardised on Microsoft 365
- • Buyers who need chat + meetings + files under one identity plane
Starting from $0.00/user/mo
Free plan available
VS
Our verdict
Depends — no universal winner. This is a collaboration comparison, not a phone shootout. Slack wins for channel-first tech/product team messaging culture; Microsoft Teams wins as the M365 collaboration hub (chat, meetings, files, identity). Buy phone separately (or Teams Phone) if PSTN is required.
Microsoft Teams is better for
- ✓ Number / country coverage
- ✓ Routing & IVR
Tie
- • Power dialer
- • WhatsApp Business
- • CRM / CTI integrations
Choose Microsoft Teams if: Organisations standardised on Microsoft 365
Choose Slack if: Tech and product orgs standardising on channel-based team messaging
Slack
Channel-based team messaging platform — Free $0, Pro $7.25/user/month annual, Business+ $15, Enterprise+ contact sales; huddles for light video, not a phone system.
Best for
- • Tech and product orgs standardising on channel-based team messaging
- • Teams that want Slack Connect and a deep app directory
Starting from $7.25/user/mo
Free plan available
Feature comparison
Grouped feature support from verified product research for Microsoft Teams and Slack.
Voice
| Feature | Microsoft Teams | Slack | Winner |
|---|---|---|---|
| Cloud phone / VoIP | Moderate | Limited | Microsoft Teams |
| Call routing & IVR | Moderate | Limited | Microsoft Teams |
| Call recording | Moderate | Limited | Microsoft Teams |
| Power dialer | Limited | Limited | Tie |
Messaging
| Feature | Microsoft Teams | Slack | Winner |
|---|---|---|---|
| SMS messaging | Moderate | Limited | Microsoft Teams |
| WhatsApp Business | Limited | Limited | Tie |
| Shared inbox | Moderate | Moderate | Tie |
| Team messaging | Strong | Strong | Tie |
| Unified multichannel inbox | Moderate | Moderate | Tie |
| Video meetings | Strong | Moderate | Microsoft Teams |
Platform
| Feature | Microsoft Teams | Slack | Winner |
|---|---|---|---|
| CRM / CTI integrations | Moderate | Moderate | Tie |
| Analytics & reporting | Moderate | Moderate | Tie |
| AI assistance | Moderate | Moderate | Tie |
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