Evidence-backed comparison of Microsoft Teams and Slack across capabilities, integrations, deployment options, confidence and known limitations.
TechSelectAI compares Microsoft Teams and Slack using recorded product evidence rather than user-specific recommendation scoring. Microsoft Teams currently has 7 supported, 0 conditional, 1 unknown/not-yet-verified, and 0 not-supported capabilities. Slack currently has 3 supported, 0 conditional, 5 unknown/not-yet-verified, and 0 not-supported capabilities. Known-fact confidence is 99% for Microsoft Teams and 99% for Slack. Latest recorded review or verification activity across the comparison: Sep 14, 2026.
This summary reflects recorded TechSelectAI evidence only. It is separate from buyer-specific Fit Score, Evidence Confidence, TechSelectAI Verified Reviews and Public Review Intelligence. Unknown means not yet verified, not unsupported.
Enterprise collaboration platform for chat, channels, meetings, calling, file sharing, apps and events.
Enterprise messaging and collaboration platform for channels, direct messaging, huddles, search, workflow and connected applications.
Different coverage percentages can reflect how much TechSelectAI has researched and verified, not which product is better. “Research pending” means the current evidence set is incomplete; it is not evidence that the product lacks the capability.
Status and confidence reflect recorded evidence. Unknown means not yet verified, not unsupported. In the summary above, TechSelectAI labels this state “research pending”.
| Capability | Microsoft Teams | Slack |
|---|---|---|
| Apps, connectors & integrationsMeetings, Calling & Extensibility | Supported99% confidenceTeams supports first- and third-party apps. | Supported99% confidenceSlack enterprise search and connected-app functionality document third-party application integration. |
| Enterprise calling / telephonyMeetings, Calling & Extensibility | Supported99% confidenceTeams supports enterprise calling and Teams Phone. | Not Yet Verified0% confidence |
| Video meetings & screen sharingMeetings, Calling & Extensibility | Supported99% confidenceMeetings with audio, video and screen sharing are core Teams capabilities. | Not Yet Verified0% confidence |
| Webinars / eventsMeetings, Calling & Extensibility | Supported98% confidenceTeams supports professional events and webinars at scale. | Not Yet Verified0% confidence |
| Channels / team spacesMessaging & Team Collaboration | Supported99% confidenceStandard, private and shared channels are documented. | Not Yet Verified0% confidence |
| Enterprise searchMessaging & Team Collaboration | Not Yet Verified0% confidence | Supported99% confidenceEnterprise Search searches Slack and connected application content. |
| File & content collaborationMessaging & Team Collaboration | Supported99% confidenceTeams brings conversations and shared content into the same workspace. | Not Yet Verified0% confidence |
| Team chat / messagingMessaging & Team Collaboration | Supported99% confidenceTeams provides persistent chat and group messaging. | Supported99% confidenceSlack is built around enterprise team messaging. |
| Integration | Microsoft Teams | Slack |
|---|---|---|
| API | Not Yet Verified0% confidence | Not Yet Verified0% confidence |
| CRM | Not Yet Verified0% confidence | Not Yet Verified0% confidence |
| Microsoft 365 | Not Yet Verified0% confidence | Not Yet Verified0% confidence |
| Microsoft Entra ID | Not Yet Verified0% confidence | Not Yet Verified0% confidence |
Comparison facts, TechSelectAI analysis, community-derived insights and estimates are kept as separate evidence types. Missing evidence is not treated as proof of non-support.
Adjust the context below. Context Fit is calculated from the same published TechSelectAI evaluation signals and scoring methodology; it does not replace verified product facts or the saved project Decision Matrix.
What could change this recommendation? Confirmed requirements, must-have failures, exact integrations, regional availability, pricing, security requirements, and implementation capacity can materially change fit. For a saved, reproducible decision with custom weights, use a Selection Project.
A feature comparison is not the same as a recommendation. TechSelectAI can evaluate both products against your must-have capabilities, integrations, deployment constraints, security requirements, region and budget.
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