Slack vs Microsoft Teams: The Ultimate Team Communication Showdown
Slack and Microsoft Teams dominate the team communication space. We compare their features, pricing, and integrations to help you pick the right platform.
Slack
Free / $7.25–$12.50/mo per user
Microsoft Teams
Free / Included in Microsoft 365 ($6–$22/mo)
At a Glance
Slack
Starting at Free / $7.25–$12.50/mo per user
Pros
- Superior user experience and design
- 10,000+ app integrations
- Excellent search and message organization
- Huddles for quick audio/video calls
- Developer-friendly API
Cons
- Gets expensive at scale
- Free plan limits history to 90 days
- Video calling not as polished as Teams
- No native document editing
Microsoft Teams
Starting at Free / Included in Microsoft 365 ($6–$22/mo)
Pros
- Tight Microsoft 365 integration (Word, Excel, SharePoint)
- Excellent video calling with 1,000-person webinars
- Included with most Microsoft 365 subscriptions
- Strong enterprise compliance and security features
- Good phone system capabilities
Cons
- Less intuitive UI than Slack
- Can feel heavy and complex
- Search is not as powerful
- Fewer third-party integrations
Feature Comparison
| Feature | Slack | Microsoft Teams |
|---|---|---|
| Ease of Use | Excellent | Moderate |
| Video Calls | Good (Huddles) | Excellent (1,000 participants) |
| Integrations | 10,000+ apps | 700+ apps |
| Microsoft 365 Sync | Partial | Deep native integration |
| Pricing (team of 50) | $362/mo | Included in M365 |
| Search | Excellent | Good |
| Security & Compliance | Good | Enterprise-grade |
| Free Plan | 90-day message history | Unlimited history |
Overview
Team communication is the backbone of modern work, and Slack and Microsoft Teams are the two giants in the space. Choosing between them often comes down to your existing software stack and team size.
Why Slack Is Loved by Developers and Startups
Slack's rise to dominance was driven by its developer-friendly design. Channels, threads, and emoji reactions made async communication feel natural. Key advantages:
- The integrations ecosystem is unmatched — GitHub, Jira, Salesforce, Google Drive, and 9,997 more apps.
- Slack Connect lets you collaborate with people at other companies without email.
- Huddles make it easy to jump into a quick voice or video call from any channel.
- The interface is fast, clean, and genuinely enjoyable to use.
Why Microsoft Teams Is Winning the Enterprise
Microsoft Teams has grown to 320 million monthly active users — largely because it ships with Microsoft 365. If your company already pays for Microsoft 365 Business, Teams is essentially free. Advantages for enterprises:
- Seamless Office integration: Edit a Word doc, join a Teams meeting, and access SharePoint — all in one app.
- Compliance and security: Built-in data governance, eDiscovery, and HIPAA/GDPR compliance make it enterprise-ready.
- Meeting quality: Teams meetings support up to 1,000 attendees and 10,000 for live events.
- Phone system: Teams can replace your entire phone system with Teams Phone.
Pricing Reality Check
For a team of 50 users on annual billing:
- Slack Pro: ~$362/month
- Microsoft Teams: Included in Microsoft 365 Business Basic at $6/user/month (so $300/month for the full M365 suite including email, storage, and Office apps)
Teams wins on pure value if you're already an M365 shop.
The Verdict
Slack is the pick for product teams, startups, and developer-heavy organizations that live and die by integrations and workflow automation. The UX is simply better.
Microsoft Teams is the pick for enterprises on Microsoft 365 where budget matters and video conferencing, compliance, and document collaboration are top priorities.