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Slack vs Microsoft Teams

S

Slack

Cloud-based team messaging and collaboration platform optimized for focused communication and integrations.

Startups, tech companies, and developer teams

VS
Microsoft Teams

Microsoft Teams

Unified communications platform integrated with Microsoft 365, combining chat, meetings, calling, and Office apps.

Enterprise teams using Microsoft 365

Short Answer

Slack is the pioneer of team messaging with a cleaner interface and better third-party integrations. Microsoft Teams has 320M+ daily active users — largely due to Office 365 bundling — and better video conferencing. Teams is free with Microsoft 365; Slack charges for most features.

Our Verdict

Slack for startups and developers who value integrations and UX. Teams for enterprises already using Microsoft 365. Teams wins on scale; Slack wins on experience.

Slack7.5
7.5Microsoft Teams

Choose Slack if

Startups, tech companies, and developer teams

Choose Microsoft Teams if

Enterprise teams using Microsoft 365

Key Differences at a Glance

🧠
Daily Active Users: Microsoft Teams wins (320M+ vs ~38M)
🔹
Interface Quality: Slack wins (Excellent vs Moderate)
🔹
Video Calling: Microsoft Teams wins (Excellent vs Good)
See all 5 differences

Key Differences

Daily Active Users

Slack

~38M

Microsoft Teams

320M+🏆

Interface Quality

Slack

Excellent🏆

Microsoft Teams

Moderate

Video Calling

Slack

Good

Microsoft Teams

Excellent🏆

Price

Slack

$7.25+/user/mo

Microsoft Teams

Included in M365🏆

Developer Integrations

Slack

Superior🏆

Microsoft Teams

Good

Pros & Cons

Slack

4 pros3 cons

Pros

  • Cleaner, more intuitive interface
  • 2,600+ app integrations
  • Better organized channels
  • Preferred by developers

Cons

  • $7.25-12.50/user/month for most features
  • Video calling less polished
  • Smaller user base than Teams

Microsoft Teams

4 pros3 cons

Pros

  • 320M+ daily active users
  • Included with Microsoft 365
  • Excellent video conferencing
  • Deep Office integration

Cons

  • Cluttered interface
  • Slower performance
  • Less intuitive than Slack

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Frequently Asked Questions

Microsoft Teams is bundled with Microsoft 365, which is used by 300M+ business users globally. Slack grew organically without this distribution advantage.

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Last updated: March 29, 2026Human reviewed