Microsoft Teams vs Slack
Compare Microsoft Teams and Slack on features, pricing, and buyer fit using the same researched criteria.
Microsoft Teams
M365 collaboration hub (chat, meetings, files) with optional Teams Phone telephony add-on — free Teams tier exists; Phone Standard ~$10/user/month annual plus PSTN.
Best for
- • Organisations standardised on Microsoft 365
- • Buyers who need chat + meetings + files under one identity plane
Starting from $0.00/user/mo
Free plan available
VS
Our verdict
Depends — no universal winner. This is a collaboration comparison, not a phone shootout. Slack wins for channel-first tech/product team messaging culture; Microsoft Teams wins as the M365 collaboration hub (chat, meetings, files, identity). Buy phone separately (or Teams Phone) if PSTN is required.
Microsoft Teams is better for
- ✓ Number / country coverage
- ✓ Routing & IVR
Tie
- • Power dialer
- • WhatsApp Business
- • CRM / CTI integrations
Choose Microsoft Teams if: Organisations standardised on Microsoft 365
Choose Slack if: Tech and product orgs standardising on channel-based team messaging
Slack
Channel-based team messaging platform — Free $0, Pro $7.25/user/month annual, Business+ $15, Enterprise+ contact sales; huddles for light video, not a phone system.
Best for
- • Tech and product orgs standardising on channel-based team messaging
- • Teams that want Slack Connect and a deep app directory
Starting from $7.25/user/mo
Free plan available
Comparison scorecard
Criterion-by-criterion results for Microsoft Teams and Slack. Numeric bars appear only when both products have approved scores.
- Depends
Starting pricing
Published floor price and what that floor actually includes.
Both offer free tiers. Slack Pro $7.25 and Business+ $15 per user/month annual; Teams is often licensed via Microsoft 365 with a free Teams tier, while Teams Phone Standard ~$10/user/month annual plus PSTN calling plans (~$17–$34 research floors) when telephony is required.
Microsoft TeamsDependsSlackDepends - Depends
User / licence minimum
Seat floors, per-employee minimums, and small-team pricing traps.
Neither is sold as a cloud-phone seat product for this comparison. Slack and Teams seat counts follow collaboration licensing; Teams Phone add-ons only apply when you buy telephony.
Microsoft TeamsDependsSlackDepends - Microsoft Teams
Number / country coverage
Published local numbers and country coverage.
Stronger cloud phone availability
Microsoft TeamsStrongerSlackWeaker - Tie
Power dialer
Power or parallel dialing for outbound teams.
Microsoft Teams and Slack have the same researched availability on power dialer (Microsoft Teams: not-supported; Slack: not-supported).
Microsoft TeamsTieSlackTie - Tie
WhatsApp Business
WhatsApp Business API / BSP capability.
Microsoft Teams and Slack have the same researched availability on whatsapp business (Microsoft Teams: not-supported; Slack: not-supported).
Microsoft TeamsTieSlackTie - Tie
CRM / CTI integrations
CRM click-to-call, logging, and CTI depth.
Microsoft Teams and Slack are close on crm-integrations (10/10 vs 10/10) from SoftwareGlimpse business-communications editorial judgments grounded in vendor documentation — not hands-on lab testing.
Microsoft TeamsTieSlackTie - Microsoft Teams
Routing & IVR
Call routing, IVR, queues, and skills-based assignment.
Microsoft Teams leads on routing (5/10 vs 4/10) from SoftwareGlimpse business-communications editorial judgments grounded in vendor documentation — not hands-on lab testing.
Microsoft TeamsStrongerSlackWeaker - Tie
Analytics
Campaign, conversation, or workforce reporting depth.
Microsoft Teams and Slack are close on analytics (6/10 vs 6/10) from SoftwareGlimpse business-communications editorial judgments grounded in vendor documentation — not hands-on lab testing.
Microsoft Teams6/10Slack6/10 - Tie
AI features
Useful AI for the primary job — not marketing fluff.
Microsoft Teams and Slack are close on ai-features (8/10 vs 8/10) from SoftwareGlimpse business-communications editorial judgments grounded in vendor documentation — not hands-on lab testing.
Microsoft Teams8/10Slack8/10
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