SoftwareGlimpse

Microsoft Teams vs Slack

Compare Microsoft Teams and Slack on features, pricing, and buyer fit using the same researched criteria.

Independently recommendedLast updated Aug 17, 20268 evidence sources9 screenshotsHow we compare

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Stronger overall fit

Microsoft Teams

7.3/10

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

Visit Microsoft Teams

VS

Our verdict

Microsoft Teams is the stronger overall fit

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

See detailed comparison ↓

Slack

6.7/10

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

Microsoft Teams vs Slack at a glance

Criterion-level leaders from verified research.

Full scorecard →

Scorecard preview

Criterion leaders based on verified research — open the Scorecard tab for evidence detail.

Starting pricingDepends
Microsoft Teams
Slack
User / licence minimumDepends
Microsoft Teams
Slack
Number / country coverageMicrosoft Teams
Microsoft Teams
Slack
Power dialerTie
Microsoft Teams
Slack
WhatsApp BusinessTie
Microsoft Teams
Slack

Which business communications is better for you?

Quick picks based on fit — not a universal ranking.

→ Microsoft Teams
Best for number / country coverage
Stronger cloud phone availability
→ Microsoft Teams
Best for routing & ivr
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.

The biggest differences

Where the products diverge most clearly on verified criteria.

Starting pricing
Depends
Microsoft Teams
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.
Slack
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.
WhatsApp Business
Tie
Microsoft Teams
Microsoft Teams and Slack have the same researched availability on whatsapp business (Microsoft Teams: not-supported; Slack: not-supported).
Slack
Microsoft Teams and Slack have the same researched availability on whatsapp business (Microsoft Teams: not-supported; Slack: not-supported).
Power dialer
Tie
Microsoft Teams
Microsoft Teams and Slack have the same researched availability on power dialer (Microsoft Teams: not-supported; Slack: not-supported).
Slack
Microsoft Teams and Slack have the same researched availability on power dialer (Microsoft Teams: not-supported; Slack: not-supported).
Routing & IVR
Microsoft Teams wins
Microsoft Teams
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.
Slack
Trails Microsoft Teams on this criterion
CRM / CTI integrations
Tie
Microsoft Teams
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.
Slack
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.

Which should you choose?

Choose Microsoft Teams if

Organisations standardised on Microsoft 365
Buyers who need chat + meetings + files under one identity plane

Choose Slack if

Tech and product orgs standardising on channel-based team messaging
Teams that want Slack Connect and a deep app directory

Related comparisons

Alternatives to consider

How we compare

A short look at the comparison process. Full methodology

1
Collect
Collect official product information, pricing, and product evidence.
2
Normalize
Map evidence to the same category evaluation criteria for both products.
3
Compare
Evaluate both products against identical criteria — ties and depends are allowed.
4
Explain
Show why each product wins, loses, or ties, with evidence behind the outcome.

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