Slack vs Microsoft Teams
Slack and Microsoft Teams are the two dominant team messaging platforms. Slack is focused and integration-rich; Teams is bundled with Microsoft 365 and doubles as a video platform.
At a glance
|
Slack
|
Microsoft Teams
|
|
|---|---|---|
| Best for | Teams that need organized, searchable communication | Organizations already using Microsoft 365 |
| Starting price | $7.25/user/mo | $4/user/mo |
| Free tier | ✓ | ✓ |
| Open source | — | — |
| Channels/threads | ✓ | ✓ |
| Video conferencing | ✓ | ✓ |
| Screen sharing | ✓ | ✓ |
| App integrations | ✓ | ✓ |
| Office 365 integration | — | ✓ |
| Huddles (quick audio) | ✓ | — |
| Custom emoji/reactions | ✓ | ✓ |
| Guest access | ✓ | ✓ |
Slack
Strengths
- Massive integration ecosystem with 2,400+ apps
- Excellent search across all messages and files
- Familiar interface that most people already know
- Strong API for custom bots and workflows
Weaknesses
- Expensive at scale — costs add up fast with large teams
- Can become noisy and distracting with many channels
- Free tier limits message history to 90 days
- Desktop app is resource-heavy
Microsoft Teams
Strengths
- Included with Microsoft 365 subscriptions
- Deep integration with Office apps (Word, Excel, SharePoint)
- Strong video conferencing with large meeting support
- Enterprise-grade security and compliance
Weaknesses
- Interface can feel cluttered and confusing
- Heavy on system resources
- Navigation between chats, teams, and channels is unintuitive
- Notifications management is frustrating
The bottom line
If your organization already pays for Microsoft 365, Teams is essentially free and deeply integrated with Word, Excel, SharePoint, and Outlook. That's hard to beat on value.
But Slack is a better communication tool. Its threading model, search, and integration ecosystem are superior. Teams tries to do everything — chat, video, files, apps — and the result can feel cluttered.
The real question is whether your team lives in Microsoft's ecosystem or not. If yes, Teams is the pragmatic choice. If no, Slack wins on experience.
Choose Slack if...
- You need the best messaging experience and integration ecosystem
- Your team uses a mix of tools, not just Microsoft
- You value clean UX and powerful search
- You need advanced automation with Workflow Builder
Choose Microsoft Teams if...
- You already use Microsoft 365 and want to consolidate
- You need built-in video conferencing for large meetings
- Budget is a concern and Teams is included in your M365 license
- Your organization requires Microsoft's compliance features
Looking for more options?
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