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Microsoft Teams vs Slack

Microsoft Teams and Slack are both leading workplace collaboration platforms, but they differ in integration depth and primary focus. Teams bundles tightly with Microsoft 365 and offers video conferencing natively, while Slack prioritizes lightweight messaging and third-party integrations.

workplace collaborationteam messagingvideo conferencingenterprise softwareproductivity tools

Microsoft Teams

A unified communication platform integrated into Microsoft 365, combining chat, video conferencing, file sharing, and Office app collaboration. Built to replace Skype for Business and strengthen the Microsoft ecosystem.

Pricing

Free (limited) or bundled with Microsoft 365 ($6–$22/user/month)

Video Conferencing

Built-in; up to 300 participants (Teams Meetings)

Launch Year

2017

Primary Users

Enterprise, Microsoft 365 subscribers

Pros

  • Deep integration with Office 365, OneDrive, SharePoint, and Outlook—seamless for Microsoft-heavy organizations
  • Includes native video conferencing (Teams Meetings) with up to 300 participants, no separate license needed
  • Competitive pricing: often bundled free with Microsoft 365 subscriptions

Cons

  • Heavier interface and slower performance compared to Slack on lower-end devices
  • Steeper learning curve for new users due to density of features
  • Third-party app integration can feel clunky and less extensive than Slack's ecosystem

Slack

A lightweight, chat-first collaboration platform designed for focused messaging, threaded conversations, and integrations with hundreds of third-party tools. Known for simplicity and developer-friendly APIs.

Pricing

Free (limited) or $7.25–$12.50/user/month

Video Conferencing

Limited; Slack Calls (1-on-1) or third-party integrations required

Launch Year

2013

Primary Users

Tech-forward teams, SMBs, cross-company collaboration

Pros

  • Lightweight, fast, and intuitive interface optimized for quick messaging and searchability
  • Largest third-party app ecosystem with 2,000+ pre-built integrations, minimal setup friction
  • Strong focus on conversation threads and context—reduces email and keeps decisions visible

Cons

  • No native video conferencing; requires third-party add-ons (Slack Calls for 1-on-1 only) or separate tools like Zoom
  • Higher standalone cost: $7.25–$12.50/user/month (or free tier with limited history)
  • Fewer native document collaboration tools compared to Teams + Office integration

Microsoft Teams wins

Teams wins overall for enterprises due to integrated video conferencing, deep Microsoft 365 bundling, and total cost advantage, though Slack edges ahead for pure messaging and integrations.

Microsoft Teams

Large enterprises, Microsoft 365-heavy organizations, teams requiring built-in video conferencing

Slack

Startups, SMBs, cross-company teams, and organizations prioritizing fast messaging and third-party workflows

Feature & Integration Comparison

AspectMicrosoft TeamsSlack
Video ConferencingBuilt-in, up to 300 participants, included with TeamsSlack Calls (1-on-1 only); group calls require Zoom, Google Meet, or other add-ons
Office IntegrationDeep: Word, Excel, PowerPoint, SharePoint, OneDrive, Outlook nativeBasic; Office files can be shared but not co-edited natively in Slack
Third-Party Integrations~500 apps, integration sometimes requires more steps2,000+ pre-built apps; marketplace is larger and easier to set up
User Interface SpeedModerate; feature-dense and can feel heavier on older systemsFast and responsive; optimized for quick navigation
Conversation ThreadingSupported but secondary to channels; less natural workflowCore feature; threads keep conversations organized and reduce channel noise
Pricing Per UserOften free/bundled with Microsoft 365; standalone ~$6–$9/monthFree (limited) or $7.25–$12.50/month standalone; no bundling discounts

Overall Capability Scores

Microsoft TeamsSlack

Video Conferencing

9
4

Teams includes robust native conferencing for up to 300 participants; Slack requires external tools for group calls.

Messaging & Search

7
10

Slack's interface and search are optimized for messaging workflows; Teams provides messaging but with more complexity.

Document Collaboration

10
5

Teams integrates Office 365 for co-editing Word, Excel, and PowerPoint; Slack lacks native document tools.

Third-Party Ecosystem

6
9

Slack's app marketplace is larger and easier to navigate; Teams integrations are functional but less extensive.

Enterprise Security & Compliance

9
8

Both offer strong compliance; Teams has slight edge due to Microsoft 365's enterprise-grade governance and DLP.

Ease of Use for New Users

6
9

Slack's clean, minimal interface is easier to learn; Teams has more features upfront, increasing onboarding time.

Use Case & Deployment Considerations

Choose Teams if your organization heavily uses Microsoft 365 (Outlook, OneDrive, SharePoint) and needs native video conferencing bundled with messaging—it delivers strong value within the Microsoft ecosystem and works best for large enterprises. Choose Slack if your team prioritizes lightweight, fast messaging, extensive third-party tool integrations, and is willing to add video conferencing separately via Zoom or Google Meet—it's ideal for cross-functional teams, startups, and tech-forward companies seeking simplicity.

When to choose each

Choose Microsoft Teams if…

Large enterprises, Microsoft 365-heavy organizations, teams requiring built-in video conferencing

Choose Slack if…

Startups, SMBs, cross-company teams, and organizations prioritizing fast messaging and third-party workflows

Frequently Asked Questions

Sources & references

Suggested sources to verify product details, pricing, reviews, and specifications.