Microsoft Teams vs Slack
Enterprise messaging and collaboration platform comparison. Expert evaluation for Fortune 500 organizations.
Key Benefits
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Expert ms teams vs slack implementation.
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Frequently Asked Questions
Which is better for enterprise use, Microsoft Teams or Slack?
Microsoft Teams is generally the stronger choice for enterprises already using Microsoft 365 due to native integration with SharePoint, OneDrive, Outlook, and Power Platform. Slack excels in organizations with diverse tool ecosystems and developer-centric workflows with its extensive third-party app marketplace.
How much does Microsoft Teams cost compared to Slack?
Microsoft Teams is included with most Microsoft 365 business and enterprise plans (starting at $6/user/month for M365 Business Basic). Slack Pro starts at $8.75/user/month and Slack Business+ at $12.50/user/month. For M365 customers, Teams is effectively free, making it significantly cheaper.
Can Microsoft Teams and Slack integrate with each other?
Yes, Microsoft and Slack offer limited interoperability. You can connect Slack channels to Teams via third-party tools and webhooks. However, native integration is limited, so most organizations choose one platform as their primary collaboration hub.
What are the key differences between Teams and Slack for messaging?
Slack offers threaded conversations by default, a more intuitive search experience, and richer emoji/reactions. Teams provides deeper integration with document collaboration, built-in video conferencing with up to 10,000 participants, and native telephony features like call queues and auto attendants.
Is Slack more secure than Microsoft Teams?
Both platforms offer enterprise-grade security including encryption, DLP, and compliance certifications. Teams benefits from Microsoft Defender integration, Conditional Access policies, and unified security management through the Microsoft 365 admin center. Slack Enterprise Grid offers Enterprise Key Management (EKM) and similar compliance certifications.
Why Organizations Choose EPC Group
EPC Group is a Houston-based Microsoft consulting firm with 29 years of enterprise implementation experience and over 10,000 successful deployments across Power BI, Microsoft Fabric, SharePoint, Azure, Microsoft 365, and Copilot. We serve organizations across all industries including Fortune 500, federal agencies, healthcare, financial services, government, manufacturing, energy, education, retail, technology, and global enterprises.
What sets EPC Group apart is our governance-first approach. Every engagement begins with a security and compliance assessment. Our team of senior architects brings hands-on delivery experience across HIPAA, SOC 2, FedRAMP, and CMMC environments. We own outcomes, not hours.
- Fixed-fee accelerators with predictable pricing and defined deliverables
- Senior architect engagement on every project, not rotating juniors
- Compliance-native delivery for regulated industries
- End-to-end coverage from strategy through 24/7 managed services
- 11,000+ enterprise engagements refined into repeatable, risk-controlled patterns
Call (888) 381-9725 or email contact@epcgroup.net for a free assessment.
Microsoft Teams vs Slack: Enterprise Comparison 2026
Microsoft Teams and Slack are the two leading enterprise messaging and collaboration platforms. Teams wins on compliance, Microsoft 365 integration, and native phone system. Slack wins for developer-heavy organizations on non-Microsoft stacks. EPC Group evaluates both and advises on Slack-to-Teams migrations.
Quick comparison
| Dimension | Microsoft Teams | Slack |
|---|---|---|
| Messaging | Channels, chats, threaded replies | Channels, DMs, Huddles |
| Video and phone | Teams Phone (full PSTN); meetings up to 1,000 | Huddles (audio/video); no native PSTN |
| Microsoft 365 native | Yes — Word, Excel, SharePoint, Power BI | Via connectors only |
| Compliance certs | 400+ — HIPAA, SOC 2, FedRAMP, CMMC | HIPAA, SOC 2; fewer government certs |
| Pricing (typical enterprise) | Bundled with Microsoft 365 — $6–$57/user/mo | Standalone — $7.25–$12.50/user/mo; Enterprise Grid: custom |
| AI features | Microsoft Copilot — meeting recap, transcription, action items | Slack AI — channel summaries, search |
| Best fit | Microsoft 365 shops; regulated industries | Dev-heavy orgs; Google Workspace / AWS ecosystems |
Teams Phone: calling options
Teams includes a native phone system. Slack does not. Teams Phone options:
- Teams Phone Standard: $8/user/month — outbound calling via Microsoft Calling Plans.
- Teams Phone Domestic bundle: $15/user/month — 3,000 outbound minutes/user/month.
- Operator Connect: carrier-managed calling with BT, Verizon, Lumen while integrating natively with Teams.
- Direct Routing: connects existing SIP or PBX infrastructure to Teams Phone.
When to choose Teams over Slack
- You already use Microsoft 365 — Teams is included at no additional cost.
- Compliance requirements: HIPAA, SOC 2, FedRAMP, or CMMC drive your platform decision.
- You need a native phone system without a separate UCaaS vendor.
- Power BI, SharePoint, or Dynamics 365 integration inside the messaging tool matters.
When to keep Slack
- Your organization is developer-heavy and uses GitHub, Jira, PagerDuty, and similar integrations.
- Google Workspace or AWS — not Microsoft — is your primary ecosystem.
- API extensibility and third-party app breadth matter more than compliance depth.
Migrating from Slack to Teams
EPC Group runs Slack-to-Teams migrations for enterprises consolidating their collaboration stack.
- Message history: export Slack history and import to Teams channels.
- Channel mapping: Slack channels mapped to Teams channels with governance policies.
- Workflow rebuild: Slack bots and integrations rebuilt as Power Automate flows or Copilot Studio agents.
- Change management: adoption training, quick-start guides, and champion programs.
Frequently asked questions
Which is better for enterprise use: Microsoft Teams or Slack?
Teams is better for Microsoft 365 environments. It is included with M365 at no extra cost and provides 400+ compliance certifications, a native phone system, and Power Platform integration. Slack is better for developer-heavy orgs on non-Microsoft stacks.
How much does Microsoft Teams cost compared to Slack?
For M365 customers, Teams is included. Slack Business+ costs $12.50/user/month. At 1,000 users, that is $150,000/year additional on top of existing M365 licensing. For most enterprises, Teams eliminates the need for Slack and its associated cost.
Can Microsoft Teams and Slack integrate with each other?
Yes — both have third-party connectors for cross-platform notifications. However, the integration is limited. Enterprises running both typically consolidate on one platform. EPC Group manages Slack-to-Teams consolidations end-to-end.
What are the key differences between Teams and Slack for messaging?
Both use channel-based messaging with DMs. Teams adds threaded replies, SharePoint file co-authoring in-channel, and Power BI tabs. Slack offers a broader third-party app ecosystem and is preferred by developers using non-Microsoft tools.
Is Slack more secure than Microsoft Teams?
No. Teams holds 400+ compliance certifications including FedRAMP, CMMC, DoD IL4, and ITAR. Slack offers HIPAA and SOC 2 but fewer government certifications. For regulated industries, Teams has a materially deeper compliance posture.
Schedule a consultation
EPC Group evaluates Teams vs Slack for Fortune 500 enterprise clients. Call (888) 381-9725 or request a 30-minute discovery call.