Slack and Microsoft Teams are the two biggest team communication tools in 2026. Together they serve hundreds of millions of users — but which one is actually better for your business?
In this Slack vs Microsoft Teams comparison, we break down pricing, features, integrations, and best use cases — so you can pick the right tool without wasting weeks testing.
Quick Verdict
Before diving deep into Slack vs Microsoft Teams, here’s the short answer:
- Slack — Best for team communication and third-party integrations.
- Microsoft Teams — Best for businesses already using Microsoft 365.
If you use Microsoft 365 daily, choose Teams. If you want the best pure chat experience, choose Slack. Now let’s compare them feature by feature.
Pricing: How Much Do They Cost?
Slack Pricing
Slack offers a free plan with 90-day message history and 10 app integrations. Paid plans:
- Pro — $8.75/user/month (unlimited history, unlimited apps).
- Business+ — $15/user/month (SSO, compliance, 99.99% SLA).
- Enterprise Grid — Custom pricing (for very large organizations).
Microsoft Teams Pricing
Microsoft Teams is bundled with Microsoft 365. Standalone plans:
- Microsoft Teams Essentials — $4/user/month (small business, 300 participants).
- Microsoft 365 Business Basic — $6/user/month (Teams + web Office apps + 1 TB OneDrive).
- Microsoft 365 Business Standard — $12.50/user/month (adds desktop Office apps).
Verdict: Teams is cheaper if you need Office apps too. Slack is better value if you just want chat.
Chat and Messaging
Slack
Slack invented the modern team chat experience. Its channels, threads, direct messages, and huddles are polished and intuitive. Slack’s search is also the best in the industry — you can find any message or file in seconds.
Microsoft Teams
Teams chat is functional but less polished than Slack. Channels are organized differently (teams → channels → tabs), which can feel confusing for new users. But for Microsoft users, it integrates seamlessly with Outlook and SharePoint.
Winner: Slack — by a clear margin.
Video Meetings
Slack
Slack’s built-in huddles are great for quick audio/video calls. For scheduled meetings, you need to integrate Slack with Zoom or Google Meet.
Microsoft Teams
Teams has full-featured video meetings built in — up to 1,000 participants, recording, transcription, breakout rooms, and whiteboard. No integration needed.
Winner: Microsoft Teams — for video meetings.
File Storage and Sharing
Slack
Slack offers basic file sharing within chats. Storage is limited to 5 GB on the Pro plan. It integrates with Google Drive, Dropbox, and OneDrive for external files.
Microsoft Teams
Teams is built on SharePoint and OneDrive — so file storage is essentially unlimited (1 TB+ per user on Microsoft 365 plans). Files are auto-organized by team and channel.
Winner: Microsoft Teams — by a wide margin.
Integrations
Slack
Slack has over 2,600 app integrations — the largest ecosystem of any team chat tool. Google Drive, GitHub, Jira, Asana, Trello, Zoom, HubSpot, Salesforce — Slack connects with almost everything.
Microsoft Teams
Teams has around 700+ apps, plus deep integration with Microsoft’s own ecosystem. For Microsoft-centric teams, that’s more than enough.
Winner: Slack — for third-party integrations.
Ease of Use
Slack
Slack is famously easy to learn. Most teams are up and running in under an hour. The interface is clean, and keyboard shortcuts make power users very fast.
Microsoft Teams
Teams has a steeper learning curve. The interface is denser, with tabs, files, and apps competing for attention. But once you learn it, it’s powerful.
Winner: Slack — for ease of use.
Security and Compliance
Slack
Slack offers enterprise-grade security on Business+ and Enterprise Grid plans. Features include SSO, 2FA, data loss prevention, retention policies, and compliance with HIPAA, SOC 2, and ISO 27001.
Microsoft Teams
Teams inherits Microsoft’s enterprise security stack. Compliance certifications include GDPR, HIPAA, SOC 1/2/3, ISO 27001, and FedRAMP. For industries with strict compliance needs, Teams is often the safer choice.
Winner: Microsoft Teams — for enterprise compliance.
Comparison Table: Slack vs Microsoft Teams
| Feature | Slack | Microsoft Teams |
|---|---|---|
| Free plan | 90-day history | Yes (unlimited time, limits on features) |
| Starting paid price | $8.75/user/month | $4/user/month (Essentials) |
| Video meetings | Huddles only | Full meetings (1,000 max) |
| File storage | 5 GB (Pro) | 1 TB+ per user |
| Third-party apps | 2,600+ | 700+ |
| Ease of use | Excellent | Steeper curve |
| Best for | Chat + integrations | Microsoft 365 users |
Which One Should You Choose?
Choose Slack if:
- You want the best team chat experience.
- You rely on many third-party integrations.
- You don’t use Microsoft 365 daily.
- Ease of use matters more than deep integration.
Choose Microsoft Teams if:
- Your team already uses Microsoft 365.
- You need built-in video meetings.
- You want unlimited file storage.
- You need enterprise-grade security and compliance.
Can You Use Both?
Yes — many organizations use both. Common setup: Teams for internal Microsoft-centric work, Slack for cross-team channels and external partners. If your team collaborates closely with clients or freelancers who use Slack, having both is common.
But for most small businesses, sticking to one reduces confusion and keeps costs down.
If you’re also evaluating other team tools, check out our guides to the best project management software for remote teams and the Zoom vs Google Meet vs Microsoft Teams comparison.
Final Thoughts on Slack vs Microsoft Teams
There’s no universal winner in the Slack vs Microsoft Teams debate — it depends on your team’s ecosystem. Slack wins for pure chat and integrations. Teams wins for businesses already on Microsoft 365, and for teams that need video meetings, file storage, and enterprise security in one platform.
Both offer free plans — test them with your team before committing.
Which one does your team use? Let us know in the comments. For more software comparisons, check out our blog.