VS
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SlackMicrosoft 365 vs Slack — Which One Wins?
A detailed, side-by-side comparison of Microsoft 365 and Slack to help you pick the right tool for your workflow.
TLDR
Quick Verdict
Slack takes the lead with a 4.7 rating and is best for team communication. Microsoft 365 (4.5) is the better pick if you need enterprises and teams needing desktop office apps.
Side-by-Side Comparison
| Criteria | Microsoft 365 | Slack |
|---|---|---|
| Rating | ★★★★★ 4.5(520) | ★★★★★ 4.7(29) |
| Pricing Model | subscription | freemium |
| Starter Price | $6/user/mo (Business Basic) | $8.75/user/mo |
| Free Tier | Yes | No |
| Platforms | Web, Windows, Mac, iOS, Android | Web, Mac, Windows, Linux, iOS, Android |
| Learning Curve | Easy | easy |
| API Available | Yes | Yes |
| Best For | Enterprises and teams needing desktop Office apps | Team communication |
| Verdict | Enterprise Standard | recommended |
Feature Checklist
| Feature | Microsoft 365 | Slack |
|---|---|---|
| Office Apps | — | |
| Teams | — | |
| OneDrive | — | |
| Outlook | — | |
| Copilot AI | — | |
| Channels | — | |
| Threads | — | |
| 2000+ integrations | — | |
| AI | — | |
| Workflows | — | |
| Files | — |
Microsoft 365
Pros
- ✓Desktop apps are still best-in-class
- ✓Excel has no real competitor
- ✓Copilot AI is powerful
Cons
- ✕More expensive than Google Workspace
- ✕Can feel bloated
- ✕Teams UX divides opinion
Slack
Pros
- ✓Integrations
- ✓AI
- ✓Search
- ✓Channels
Cons
- ✕Free limited
- ✕Overwhelming
- ✕Expensive
The Bottom Line
Both Microsoft 365 and Slack are solid tools in the Cloud Storage & Collaboration space. Slack edges ahead with a stronger overall rating (4.7 vs 4.5) and is the better choice for team communication. However, if you prioritize enterprises and teams needing desktop office apps, Microsoft 365 is worth serious consideration. We recommend trying the free tier or trial of each before committing.
Frequently Asked Questions
Is Microsoft 365 better than Slack?▼
Slack scores higher overall with a 4.7 rating vs 4.5. However, the best choice depends on your specific needs. Microsoft 365 is best for Enterprises and teams needing desktop Office apps, while Slack is best for Team communication.
Can I switch from Microsoft 365 to Slack?▼
Yes, most users can migrate between the two. Slack offers trial options to help you evaluate the switch.
Which is more affordable, Microsoft 365 or Slack?▼
Microsoft 365 starts at $6/user/mo (Business Basic), while Slack starts at $8.75/user/mo. Microsoft 365 offers a free tier.