Slack dominates enterprise messaging with superior search and integrations, Teams excels as an all-in-one Microsoft ecosystem solution with built-in Office integration, while Discord leads in community engagement and voice quality for gaming and creative groups. Each serves distinct use cases: enterprise collaboration, corporate unified communications, and community-driven platforms respectively.
Slack vs Teams vs Discord — Side-by-side comparison on A Versus B
Cloud-based team messaging platform used by 750,000+ daily active users across enterprises.
Unified communications platform integrated with Microsoft 365, combining chat, calls, and meetings.
VoIP and instant messaging platform with 150+ million monthly users, dominant in gaming communities.
Primary Use Case. Pricing Model. Message Search Quality. Built-in Video/Audio Calls. Third-party Integrations. Enterprise Security & Compliance. Learning Curve
Choose Slack if you need the best message searchability, superior third-party integrations, and a dedicated collaboration platform built for professional workflows. Choose Teams if you're already invested in Microsoft 365, need enterprise-grade security, advanced meeting capabilities, and seamless Office document integration. Choose Discord if you're building a community, prioritize voice quality for gaming/creators, want zero startup costs, and value an intuitive, user-friendly experience over enterprise compliance features.
Slack: 2,600+ | Microsoft Teams: ~700 | Discord: N/A
Slack: $7.25 | Microsoft Teams: Included with M365 | Discord: N/A
Slack: $7.25 | Microsoft Teams: $6.00 (with Microsoft 365 Business Basic) | Discord: N/A
Slack: $87 (billed yearly) | Microsoft Teams: $72 (bundled pricing) | Discord: N/A
Slack: 2,400+ | Microsoft Teams: 1,000+ | Discord: N/A
Slack: Up to 2,000 (with paid plan) | Microsoft Teams: Up to 10,000 | Discord: N/A
Slack: Limited (third-party connectors) | Microsoft Teams: Native with SharePoint, OneDrive, Office Web Apps | Discord: N/A
Slack: Slack AI (summarization, search, assisted writing) | Microsoft Teams: Microsoft Copilot Pro (enterprise AI, meeting insights) | Discord: N/A
Slack: Excellent - optimized search indexing | Microsoft Teams: 2-4 seconds average | Discord: 0.1-0.3 seconds
Slack: 95% | Microsoft Teams: 85% | Discord: N/A
Slack: $3,600 (Pro plan at $15/user) | Microsoft Teams: N/A | Discord: N/A
Slack: 65% | Microsoft Teams: N/A | Discord: N/A
Slack: 7 days | Microsoft Teams: N/A | Discord: N/A
Slack: 10,000 most recent | Microsoft Teams: N/A | Discord: N/A
Slack: No | Microsoft Teams: N/A | Discord: N/A
Slack: $8.25 (Pro plan, min 3 users) | Microsoft Teams: $6-12 | Discord: N/A
Slack: Unlimited (Slack Huddles for video limited to 50 participants) | Microsoft Teams: N/A | Discord: N/A
Slack: Huddles for brief video, limited to 50 participants; requires external tool for full conferencing | Microsoft Teams: N/A | Discord: N/A
Slack: Not native; requires integration with Otter.ai or similar third-party services | Microsoft Teams: N/A | Discord: N/A
Slack: 5 out of 5 (core feature with channels, threads, and history) | Microsoft Teams: N/A | Discord: N/A
Slack: 2 out of 5 (available via integration, not native) | Microsoft Teams: N/A | Discord: N/A
Slack: 30+ (CRM tools, meeting summaries, automation, SlackBot enhancements) | Microsoft Teams: N/A | Discord: N/A
Slack: $7.25 | Microsoft Teams: N/A | Discord: N/A
Slack: $12.50 | Microsoft Teams: N/A | Discord: N/A
Slack: 2000+ | Microsoft Teams: N/A | Discord: N/A
Slack: Cloud-based SaaS only | Microsoft Teams: N/A | Discord: N/A
Slack: Compliant but data on Salesforce servers | Microsoft Teams: N/A | Discord: N/A
Slack: No increases for 33 months | Microsoft Teams: N/A | Discord: N/A
Slack: Free | Microsoft Teams: N/A | Discord: Completely free
Slack: Unlimited group chats | Microsoft Teams: N/A | Discord: Up to 50 (voice channel)
Slack: Workflow automation, search enhancement | Microsoft Teams: N/A | Discord: N/A
Slack: Not available | Microsoft Teams: N/A | Discord: N/A
Slack: Optimized with threads and archives | Microsoft Teams: N/A | Discord: N/A
Slack: N/A | Microsoft Teams: N/A | Discord: N/A
Slack: 2,000+ | Microsoft Teams: N/A | Discord: N/A
Slack: Slack AI (optional on paid plans) | Microsoft Teams: N/A | Discord: N/A
Slack: Limited (requires custom setup) | Microsoft Teams: N/A | Discord: N/A
Slack: Advanced with conditional logic | Microsoft Teams: N/A | Discord: N/A
Slack: Variable by plan | Microsoft Teams: N/A | Discord: N/A
Slack: 33+ months | Microsoft Teams: N/A | Discord: N/A
Slack: No, proprietary | Microsoft Teams: N/A | Discord: N/A
Slack: Advanced AI assistant, smart summaries, automation | Microsoft Teams: N/A | Discord: N/A
Slack: Requires 3rd party | Microsoft Teams: 1080p (1920x1080) | Discord: 1080p (premium servers)
Slack: 2200+ | Microsoft Teams: 1000+ | Discord: N/A
Slack: $150 (billed monthly) | Microsoft Teams: $70/year (via Microsoft 365 Business Basic) | Discord: N/A
Slack: 90 days | Microsoft Teams: N/A | Discord: N/A
Slack: 0 (not native feature) | Microsoft Teams: N/A | Discord: N/A
Slack: 99.99% | Microsoft Teams: N/A | Discord: N/A
Slack: 1 workspace | Microsoft Teams: N/A | Discord: N/A
Slack: 3 participants | Microsoft Teams: N/A | Discord: N/A
Slack: Unlimited (slide deck view only) | Microsoft Teams: N/A | Discord: N/A
Slack: $8.75 | Microsoft Teams: N/A | Discord: N/A
Slack: DMs only, Enterprise+ plan | Microsoft Teams: N/A | Discord: N/A
Slack: Slack AI (search, summarization, drafting) | Microsoft Teams: N/A | Discord: N/A
Slack: $12.50 per user/month | Microsoft Teams: $15 (Essentials) / $20 (Standard) | Discord: $9.99 per server/month
Slack: 90 days maximum | Microsoft Teams: N/A | Discord: Unlimited
Slack: 16 kHz | Microsoft Teams: N/A | Discord: 48 kHz
Slack: 2,000+ | Microsoft Teams: 500+ | Discord: 400+
Slack: 15 participants | Microsoft Teams: N/A | Discord: 50+ participants
Slack: Yes | Microsoft Teams: N/A | Discord: No
Slack: Advanced (Workflow Builder, automations) | Microsoft Teams: N/A | Discord: Basic (bots only)
Slack: Unlimited | Microsoft Teams: N/A | Discord: Unlimited
Slack: 750 million | Microsoft Teams: N/A | Discord: N/A
Slack: Unlimited external guests via workspace invite | Microsoft Teams: N/A | Discord: N/A
Slack: $7.25 | Microsoft Teams: $6 | Discord: Free (Nitro $9.99/year)
Slack: 10 GB | Microsoft Teams: N/A | Discord: N/A
Slack: $8-12.50 (Pro/Business+) | Microsoft Teams: N/A | Discord: N/A
Slack: 750,000+ | Microsoft Teams: N/A | Discord: N/A
Slack: 10 years standard | Microsoft Teams: N/A | Discord: N/A
Slack: Channel-based threads (contextual loss in active channels) | Microsoft Teams: N/A | Discord: N/A
Slack: No (proprietary) | Microsoft Teams: N/A | Discord: N/A
Slack: Native iOS/Android with feature-parity | Microsoft Teams: N/A | Discord: N/A
Slack: 50+ | Microsoft Teams: N/A | Discord: N/A
Slack: Yes (Slack Huddles) | Microsoft Teams: N/A | Discord: N/A
Slack: 2,400+ apps | Microsoft Teams: N/A | Discord: N/A
Slack: $412.50/month | Microsoft Teams: N/A | Discord: N/A
Paid Workspaces/Users (Enterprise Adoption)
Slack: 750,000+ paid workspaces | Microsoft Teams: N/A | Discord: N/A
Slack: Proprietary/closed | Microsoft Teams: Closed proprietary | Discord: Proprietary/Closed
Slack: $150/month ($1,800/year) | Microsoft Teams: N/A | Discord: N/A
Slack: 2,400+ integrations | Microsoft Teams: N/A | Discord: N/A
Slack: 90-day limited access | Microsoft Teams: N/A | Discord: N/A
Slack: 750,000+ active workspaces | Microsoft Teams: N/A | Discord: N/A
Slack: No (cloud-only) | Microsoft Teams: N/A | Discord: N/A
Slack: 99.99% | Microsoft Teams: 99.9% | Discord: N/A
Slack: Yes (Business+ plan required) | Microsoft Teams: Yes | Discord: No
Slack: $12.50/user (Pro plan) | Microsoft Teams: N/A | Discord: N/A
Slack: $80-150 | Microsoft Teams: N/A | Discord: N/A
Slack: $400-750 | Microsoft Teams: N/A | Discord: N/A
Slack: 10,000 messages (free); unlimited (paid) | Microsoft Teams: N/A | Discord: N/A
Slack: No (requires integrations) | Microsoft Teams: N/A | Discord: N/A
Slack: 50-100ms (instant) | Microsoft Teams: N/A | Discord: N/A
Slack: 5GB (Free), varies by plan | Microsoft Teams: N/A | Discord: N/A
Slack: 0.5-1 hour | Microsoft Teams: N/A | Discord: N/A
Slack: 1000 | Microsoft Teams: 10000 | Discord: 50
Slack: 7.5 | Microsoft Teams: 8 | Discord: 9.5
Slack: 3-7 | Microsoft Teams: 1-3 | Discord: 1
Slack: 2 | Microsoft Teams: 5 | Discord: 1.5
Slack: 99.99% | Microsoft Teams: 99.9% | Discord: 99.99%
Slack: $8.75 (annual) | Microsoft Teams: $6.99 | Discord: N/A
Slack: 150 | Microsoft Teams: 300 | Discord: N/A
Slack: 1 GB shared workspace | Microsoft Teams: 100 GB per user | Discord: N/A
Slack: 90 days | Microsoft Teams: 90 days | Discord: N/A
Annual Subscription Cost (Pro, 100 users)
Slack: $10,500 | Microsoft Teams: $7,800 or free with Microsoft 365 | Discord: N/A
Slack: 280 MB | Microsoft Teams: 450 MB | Discord: N/A
Slack: 2,000+ | Microsoft Teams: 500+ apps | Discord: N/A
Slack: 2-4 seconds | Microsoft Teams: N/A | Discord: N/A
Slack: 9.2/10 | Microsoft Teams: N/A | Discord: N/A
Maximum video call participants (free tier)
Slack: 100 participants | Microsoft Teams: N/A | Discord: N/A
Slack: 90 days searchable | Microsoft Teams: N/A | Discord: N/A
Slack: 2,000+ apps (Slack App Directory) | Microsoft Teams: N/A | Discord: N/A
Slack: Cost-effective until ~12 users | Microsoft Teams: N/A | Discord: N/A
Slack: No: messaging-only, requires integrations | Microsoft Teams: N/A | Discord: N/A
Slack: 1-3 days | Microsoft Teams: N/A | Discord: N/A
Slack: 750+ million messages daily across 750k+ organizations | Microsoft Teams: N/A | Discord: N/A
Monthly Subscription Cost (Pro/Standard)
Slack: $8.25 | Microsoft Teams: $0 (bundled) or $12.50 (standalone) | Discord: N/A
Slack: <100ms | Microsoft Teams: 200-300ms | Discord: N/A
Slack: All messages indexed instantly | Microsoft Teams: Last 3 months only | Discord: N/A
Slack: 20GB | Microsoft Teams: 250GB | Discord: N/A
Slack: 90 days | Microsoft Teams: Unlimited | Discord: N/A
Slack: API-based (basic) | Microsoft Teams: Native (deep) | Discord: N/A
Slack: 4.5/5 | Microsoft Teams: 4.0/5 | Discord: N/A
Slack: 2000 | Microsoft Teams: 300 | Discord: N/A
Slack: $12.50 | Microsoft Teams: $6.00 | Discord: N/A
Slack: 100 (workspace) | Microsoft Teams: 1000 (1TB OneDrive) | Discord: N/A
Slack: 40 | Microsoft Teams: 60 minutes | Discord: Unlimited
Maximum Video Conference Participants (Free)
Slack: Limited (typically 3-4) | Microsoft Teams: 100 | Discord: N/A
Slack: 4.6/5 (12,400 reviews) | Microsoft Teams: 4.1/5 (8,300 reviews) | Discord: N/A
Slack: Full-text indexed across all messages | Microsoft Teams: Basic keyword search (limited free tier) | Discord: N/A
Slack: 21 million | Microsoft Teams: 320 million | Discord: N/A
Slack: Partial (DMs only, beta feature) | Microsoft Teams: N/A | Discord: Not enabled by default (optional for 1-on-1 only)
Slack: 90 days | Microsoft Teams: unlimited | Discord: unlimited
Cost Per User (Annual, Lowest Paid Tier)
Slack: $8/month | Microsoft Teams: N/A | Discord: N/A
Slack: Certified (SOC 2 Type II, GDPR) | Microsoft Teams: N/A | Discord: N/A
Monthly Cost Per User (Standard Tier, Annual Billing)
Slack: 0 GB (integrations only) | Microsoft Teams: N/A | Discord: N/A
Maximum Video Conference Participants (Standard Plan)
Slack: 2 | Microsoft Teams: N/A | Discord: N/A
Slack: 2,300+ | Microsoft Teams: N/A | Discord: N/A
Slack: 10,000 (free tier); unlimited (paid) | Microsoft Teams: N/A | Discord: N/A
Slack: $8.99 | Microsoft Teams: N/A | Discord: N/A
Slack: 750,000 | Microsoft Teams: N/A | Discord: N/A
Slack: Cloud-only SaaS | Microsoft Teams: Cloud-only (SaaS) | Discord: N/A
Slack: 4.7 | Microsoft Teams: N/A | Discord: N/A
Slack: N/A (proprietary) | Microsoft Teams: N/A | Discord: N/A
Slack: 2,000+ | Microsoft Teams: 1,000+ native integrations | Discord: N/A
Slack: $8-15 | Microsoft Teams: N/A | Discord: N/A
Slack: 750,000+ workspaces | Microsoft Teams: N/A | Discord: N/A
Slack: 10,000 (free), unlimited (paid) | Microsoft Teams: N/A | Discord: N/A
Slack: 1-4 hours (Enterprise Grid) | Microsoft Teams: N/A | Discord: N/A
Slack: 5GB | Microsoft Teams: N/A | Discord: N/A
Slack: $8 | Microsoft Teams: N/A | Discord: N/A
Slack: Unlimited (90-day history) | Microsoft Teams: N/A | Discord: N/A
Slack: No native feature | Microsoft Teams: N/A | Discord: N/A
Slack: Full-featured messaging | Microsoft Teams: N/A | Discord: N/A
Slack: Secondary feature | Microsoft Teams: N/A | Discord: N/A
Slack: ~50 million (daily active) | Microsoft Teams: 320 million | Discord: 150+ million
Paying Organizations/Enterprise Customers
Slack: 750 (in thousands = 750,000 paying orgs) | Microsoft Teams: N/A | Discord: N/A
Slack: 10 maximum | Microsoft Teams: N/A | Discord: N/A
Slack: $12.50/user/month | Microsoft Teams: N/A | Discord: N/A
Slack: 150+ | Microsoft Teams: N/A | Discord: N/A
Slack: 10+ | Microsoft Teams: N/A | Discord: N/A
Slack: Less than 1 hour | Microsoft Teams: N/A | Discord: N/A
Slack: $8.75 | Microsoft Teams: $6.00 (or free with M365) | Discord: Free (Nitro $9.99 optional)
Slack: 9.5 | Microsoft Teams: 6.0 | Discord: 2.0
Slack: 3 (free tier) | Microsoft Teams: 10,000 | Discord: Unlimited
Slack: SOC 2, ISO 27001, GDPR | Microsoft Teams: SOC 2, FedRAMP, ISO 27001, HIPAA | Discord: SOC 2 only
Slack: 15-20 | Microsoft Teams: 30-45 | Discord: 5-10
Slack: 21 million daily active | Microsoft Teams: 280 million monthly active | Discord: 200 million registered
Slack: 7.5 | Microsoft Teams: 8.0 | Discord: 9.5
Slack: Slack AI assistant included | Microsoft Teams: Copilot Pro integration | Discord: No native AI features
Slack: Limited | Microsoft Teams: Full | Discord: Limited
Slack: 2 participants | Microsoft Teams: N/A | Discord: N/A
Slack: 60 minutes | Microsoft Teams: 60 minutes (3+ participants) | Discord: N/A
Slack: Unlimited | Microsoft Teams: N/A | Discord: N/A
Slack: 2,000+ | Microsoft Teams: 500+ | Discord: 150+
Slack: 1080p (30 fps) | Microsoft Teams: N/A | Discord: N/A
Slack: $6.67 | Microsoft Teams: N/A | Discord: N/A
Slack: Limited on free plan (10,000 messages); full search on paid | Microsoft Teams: N/A | Discord: N/A
Slack: Channel + Reply threads | Microsoft Teams: N/A | Discord: N/A
Slack: 15 | Microsoft Teams: N/A | Discord: N/A
Slack: Not available (cloud-only) | Microsoft Teams: N/A | Discord: N/A
Slack: N/A | Microsoft Teams: No, paid only | Discord: N/A
Slack: N/A | Microsoft Teams: Full native integration | Discord: N/A
Slack: N/A | Microsoft Teams: Often requires app/account | Discord: N/A
Slack: N/A | Microsoft Teams: 10,000 | Discord: N/A
Slack: N/A | Microsoft Teams: 50 rooms | Discord: N/A
Slack: N/A | Microsoft Teams: $6/month (Microsoft 365 bundle) | Discord: N/A
Slack: N/A | Microsoft Teams: Limited translation features | Discord: N/A
Slack: N/A | Microsoft Teams: $6 (Teams Essentials) | Discord: N/A
Maximum Free Tier Group Meeting Duration
Slack: N/A | Microsoft Teams: 24 hours | Discord: N/A
Slack: N/A | Microsoft Teams: 100 participants | Discord: Unlimited
Slack: N/A | Microsoft Teams: Premium only ($10/user/month) | Discord: N/A
Slack: N/A | Microsoft Teams: 8+ apps (Outlook, Excel, Word, OneDrive, SharePoint, Project, Planner, Power BI) | Discord: N/A
Advanced Chat Features (Channels, Threading, Workflows)
Slack: N/A | Microsoft Teams: Advanced (channels, nested threads, queues, connectors) | Discord: N/A
Slack: N/A | Microsoft Teams: 4.5 stars | Discord: N/A
Slack: N/A | Microsoft Teams: 3,669 reviews | Discord: N/A
3-Year Total Cost of Ownership (1,000 users)
Slack: N/A | Microsoft Teams: Lower (integrated M365) | Discord: N/A
Slack: N/A | Microsoft Teams: 3,668 reviews | Discord: N/A
Slack: N/A | Microsoft Teams: 7.9% positive | Discord: N/A
Slack: N/A | Microsoft Teams: Limited to basic captions | Discord: N/A
Slack: N/A | Microsoft Teams: Basic transcription only | Discord: N/A
Slack: N/A | Microsoft Teams: Third-party device support only | Discord: N/A
Slack: N/A | Microsoft Teams: $4.50 | Discord: N/A
Slack: N/A | Microsoft Teams: 60 minutes | Discord: N/A
Slack: N/A | Microsoft Teams: Limited (Copilot requires E5) | Discord: N/A
Slack: N/A | Microsoft Teams: 4K at 30fps | Discord: N/A
Slack: N/A | Microsoft Teams: 31 languages | Discord: N/A
Enterprise Deployment Adoption (500+ seat orgs)
Slack: N/A | Microsoft Teams: 67% of deployments | Discord: N/A
3-Year TCO Advantage for 1,000 Users with M365
Slack: N/A | Microsoft Teams: 47% lower cost | Discord: N/A
Slack: N/A | Microsoft Teams: $7.00 (Business Basic 2026 price) | Discord: Free (with Nitro at $9.99)
Slack: N/A | Microsoft Teams: 300+ participants | Discord: 25 participants
Slack: N/A | Microsoft Teams: Excellent (optimized for reliability) | Discord: Outstanding (advanced codecs)
Slack: N/A | Microsoft Teams: 4K (3840x2160) | Discord: 1080p (1920x1080)
Slack: N/A | Microsoft Teams: 40+ languages (Teams Premium) | Discord: 0 (no native support)
Slack: N/A | Microsoft Teams: Steep (enterprise-focused interface) | Discord: Minimal (intuitive design)
Slack: N/A | Microsoft Teams: 350+ million monthly active users | Discord: 500+ million registered users
Slack: N/A | Microsoft Teams: ISO 27001, SOC 2, HIPAA, GDPR | Discord: SOC 2, GDPR (limited enterprise focus)
Slack: N/A | Microsoft Teams: 320M | Discord: N/A
Slack: N/A | Microsoft Teams: Unlimited (OneDrive) | Discord: N/A
Slack: N/A | Microsoft Teams: Full (Word, Excel, PowerPoint, Outlook) | Discord: N/A
Slack: N/A | Microsoft Teams: Copilot Pro required ($20+ per tenant) | Discord: N/A
Slack: N/A | Microsoft Teams: Windows, Mac, iOS, Android, Web | Discord: N/A
Slack: N/A | Microsoft Teams: 4.5 Mbps | Discord: N/A
Slack: N/A | Microsoft Teams: 320 million | Discord: N/A
Slack: N/A | Microsoft Teams: $0 (Free) or $6 (Standard) | Discord: N/A
Slack: N/A | Microsoft Teams: 10,000 participants | Discord: N/A
Slack: N/A | Microsoft Teams: Copilot with GPT-4, speech-to-text, real-time translation | Discord: N/A
Slack: N/A | Microsoft Teams: Microsoft-managed regional datacenters (limited control) | Discord: N/A
Slack: N/A | Microsoft Teams: 80-120ms | Discord: 50-80ms
Slack: N/A | Microsoft Teams: 60 minutes (100 participants max) | Discord: Unlimited
Slack: N/A | Microsoft Teams: $6.00 | Discord: $0 (free tier)
Slack: N/A | Microsoft Teams: 30fps | Discord: 60fps
Slack: N/A | Microsoft Teams: 60+ languages | Discord: 15 languages
Slack: N/A | Microsoft Teams: Limited (fixed structure) | Discord: Unlimited
Slack: N/A | Microsoft Teams: 80% | Discord: Less than 5%
Free Tier Meeting Duration for Group Calls
Slack: N/A | Microsoft Teams: 60 minutes (unlimited participants) | Discord: N/A
Slack: N/A | Microsoft Teams: 300 participants | Discord: N/A
Slack: N/A | Microsoft Teams: 5 GB (OneDrive) | Discord: N/A
Slack: N/A | Microsoft Teams: 50 breakout rooms | Discord: N/A
Global Enterprise Video Conferencing Market Share (2024)
Slack: N/A | Microsoft Teams: 28.2% | Discord: N/A
Slack: N/A | Microsoft Teams: Native: Word, Excel, SharePoint, OneDrive, Outlook, Power BI | Discord: N/A
Slack: N/A | Microsoft Teams: 300+ million users | Discord: N/A
Slack: N/A | Microsoft Teams: $4.00 (Teams Essentials) - $12.50 (Teams Premium) | Discord: N/A
Slack: N/A | Microsoft Teams: 2 GB per file | Discord: N/A
Slack: N/A | Microsoft Teams: Proprietary closed-source | Discord: N/A
Slack: N/A | Microsoft Teams: Cloud-only SaaS | Discord: N/A
Annual TCO (1,000 users, 3-year average)
Slack: N/A | Microsoft Teams: $48,000-150,000 | Discord: N/A
Slack: N/A | Microsoft Teams: 300 standard | Discord: N/A
Slack: N/A | Microsoft Teams: $0 (limited) | Discord: N/A
Slack: N/A | Microsoft Teams: 1920x1080 | Discord: N/A
Slack: N/A | Microsoft Teams: 1 primary | Discord: N/A
Slack: N/A | Microsoft Teams: Unlimited in OneDrive | Discord: N/A
Slack: N/A | Microsoft Teams: 4.5 | Discord: N/A
Slack: N/A | Microsoft Teams: 8 (Copilot, live transcription, noise suppression, translation) | Discord: N/A
Slack: N/A | Microsoft Teams: 1 | Discord: N/A
Slack: N/A | Microsoft Teams: 8 (SOC 2, FedRAMP, HIPAA, ISO 27001) | Discord: N/A
Slack: N/A | Microsoft Teams: Unlimited | Discord: N/A
Slack: N/A | Microsoft Teams: 4 participants | Discord: N/A
Slack: N/A | Microsoft Teams: Available (free in 43 languages) | Discord: N/A
Slack: N/A | Microsoft Teams: Office 365/Microsoft 365 (native) | Discord: N/A
Slack: N/A | Microsoft Teams: 100 participants | Discord: N/A
Slack: N/A | Microsoft Teams: 60+ languages | Discord: N/A
Slack: N/A | Microsoft Teams: 1080p @ 30fps | Discord: N/A
Slack: N/A | Microsoft Teams: 4K @ 30fps (Premium only) | Discord: N/A
Slack: N/A | Microsoft Teams: 36+ months | Discord: N/A
Slack: N/A | Microsoft Teams: 8-10 (account creation + installation) | Discord: N/A
Slack: N/A | Microsoft Teams: Native (OneDrive, SharePoint, Outlook, Excel co-auth) | Discord: N/A
Slack: N/A | Microsoft Teams: 10,000 most recent | Discord: Unlimited
Slack: N/A | Microsoft Teams: Full integration with Office apps | Discord: No native integration
Slack: N/A | Microsoft Teams: Certified | Discord: Not certified
Slack: N/A | Microsoft Teams: 1,500+ apps | Discord: 10,000+ bots
Slack: N/A | Microsoft Teams: $6 per user (Teams Essentials) | Discord: Free
Slack: N/A | Microsoft Teams: 50-80ms | Discord: 20-30ms
Slack: N/A | Microsoft Teams: 320 million | Discord: 150 million
Slack: N/A | Microsoft Teams: 3,000 searchable | Discord: Unlimited
Slack: N/A | Microsoft Teams: Native Outlook calendar sync | Discord: Limited third-party apps
Slack: N/A | Microsoft Teams: Yes (SOC 2, HIPAA, FedRAMP) | Discord: Yes
Slack: N/A | Microsoft Teams: 100 video participants | Discord: 8 video participants
Slack: N/A | Microsoft Teams: Free Teams ($5-12/month for Pro) | Discord: Free (unlimited)
Slack: N/A | Microsoft Teams: 720p standard (1080p available) | Discord: N/A
Slack: N/A | Microsoft Teams: 2021 | Discord: N/A
Slack: N/A | Microsoft Teams: Native integration (Word, Excel, PowerPoint, OneDrive) | Discord: N/A
Slack: N/A | Microsoft Teams: Windows, Mac, iOS, Android | Discord: N/A
Slack: N/A | Microsoft Teams: 100 | Discord: N/A
Slack: N/A | Microsoft Teams: 60 | Discord: N/A
Slack: N/A | Microsoft Teams: 720p30fps | Discord: N/A
Slack: N/A | Microsoft Teams: 4.2 (2.4M reviews) | Discord: 4.3 stars (3.8M reviews)
Slack: N/A | Microsoft Teams: Not available | Discord: N/A
Slack: N/A | Microsoft Teams: 1000+ via Microsoft AppSource | Discord: N/A
Slack: N/A | Microsoft Teams: 30 days (limited features) | Discord: N/A
Slack: N/A | Microsoft Teams: N/A | Discord: Unlimited
Slack: N/A | Microsoft Teams: N/A | Discord: 50-100ms with spatial audio
Slack: N/A | Microsoft Teams: N/A | Discord: 128 kbps
Slack: N/A | Microsoft Teams: N/A | Discord: No
Slack: N/A | Microsoft Teams: N/A | Discord: Limited/Third-party only
Slack: N/A | Microsoft Teams: N/A | Discord: Comprehensive API with bot framework (GDC 2026)
Slack: N/A | Microsoft Teams: N/A | Discord: Discord Nitro $9.99-99.99/year
Slack: N/A | Microsoft Teams: N/A | Discord: 1440 (24 hours)
Slack: N/A | Microsoft Teams: N/A | Discord: Limited, experimental
Slack: N/A | Microsoft Teams: N/A | Discord: Permanent (searchable)
Slack: N/A | Microsoft Teams: N/A | Discord: Basic moderation bots
Slack: N/A | Microsoft Teams: N/A | Discord: Yes, SOC 2 Type II
Slack: N/A | Microsoft Teams: N/A | Discord: 100 MB
Slack: N/A | Microsoft Teams: N/A | Discord: ~150 MB
Slack: N/A | Microsoft Teams: N/A | Discord: 1080p @ 60fps
Slack: N/A | Microsoft Teams: N/A | Discord: 10,000+ bots
Slack: N/A | Microsoft Teams: N/A | Discord: Free (with Nitro at $9.99/mo optional)
Slack: N/A | Microsoft Teams: N/A | Discord: 500,000+
Slack: N/A | Microsoft Teams: N/A | Discord: $9.99
Slack: N/A | Microsoft Teams: N/A | Discord: Opus (optimized, 128kbps default)
Message History Scanning for AI Training
Slack: N/A | Microsoft Teams: N/A | Discord: Yes (Discord trains AI on content)
Slack: N/A | Microsoft Teams: N/A | Discord: 128 kbps optimized
Slack: N/A | Microsoft Teams: N/A | Discord: No (opt-in only)
Maximum Simultaneous Video Participants (Free)
Slack: N/A | Microsoft Teams: N/A | Discord: 50 with Nitro ($99.99/year)
Slack: N/A | Microsoft Teams: N/A | Discord: 48kHz premium
Slack: N/A | Microsoft Teams: N/A | Discord: No direct integration
Slack: N/A | Microsoft Teams: N/A | Discord: Not HIPAA certified
Slack: N/A | Microsoft Teams: N/A | Discord: Speech-to-text via integrations only
Slack: N/A | Microsoft Teams: N/A | Discord: 195 minutes
Slack: N/A | Microsoft Teams: N/A | Discord: 50 participants
Slack: N/A | Microsoft Teams: N/A | Discord: 30 days
Slack: N/A | Microsoft Teams: N/A | Discord: ~8,000 public servers (estimated)
Free Tier Group Video Call Duration Limit
Maximum Group Call Participants (Free Tier)
Slack: N/A | Microsoft Teams: N/A | Discord: 100
Slack: N/A | Microsoft Teams: N/A | Discord: 60
Slack: N/A | Microsoft Teams: N/A | Discord: No (bot-dependent)
Slack: N/A | Microsoft Teams: N/A | Discord: Yes (unlimited)
Maximum Webinar Participants (Paid Plan)
Slack: N/A | Microsoft Teams: N/A | Discord: Proprietary/Closed-source
Slack: N/A | Microsoft Teams: N/A | Discord: Under 100ms optimized
Slack: N/A | Microsoft Teams: N/A | Discord: 8 MB per file
Slack: N/A | Microsoft Teams: N/A | Discord: Not supported; Discord-only infrastructure
Maximum Concurrent Voice Users (Free Tier)
Slack: N/A | Microsoft Teams: N/A | Discord: Limited control; Discord retains indefinitely
Slack: N/A | Microsoft Teams: N/A | Discord: Server-side only (E2E requires manual enable)
Slack: N/A | Microsoft Teams: N/A | Discord: 90-120 MB
Slack: N/A | Microsoft Teams: N/A | Discord: Full history searchable
Slack: N/A | Microsoft Teams: N/A | Discord: Advanced (roles, automod, audit logs, permissions)
Slack: N/A | Microsoft Teams: N/A | Discord: Unlimited (16.7M+ in largest server)
Slack: N/A | Microsoft Teams: N/A | Discord: Not available
Slack: N/A | Microsoft Teams: N/A | Discord: 80-120ms
Slack: N/A | Microsoft Teams: N/A | Discord: 2000+
Slack: N/A | Microsoft Teams: N/A | Discord: 6.7+ million
Slack: N/A | Microsoft Teams: N/A | Discord: AutoMod, basic filters, requires bots
How to choose between Slack and Microsoft Teams and Discord
Compare Slack vs Microsoft Teams vs Discord
Slack vs Teams vs Discord — Structured Comparison Data
Machine-readable comparison dataset for Slack vs Teams vs Discord. Contains 377 attribute comparisons, 5 FAQ pairs.
Slack vs Teams vs Discord — Attribute Category Vocabulary
Taxonomy of attribute categories used to classify comparison data for Slack vs Teams vs Discord.
Can I use Discord for business communications?
While Discord can technically be used for business, it lacks enterprise security certifications (HIPAA, FedRAMP), has no message search, and no compliance audit trails. It's best suited for informal teams, open-source projects, or communities rather than regulated industries or formal corporate communications.
Is Teams really free if I have Microsoft 365?
Yes, Teams is included in all Microsoft 365 subscriptions at no additional cost. However, the standalone Teams free plan has limitations: 1-on-1 video calls only, 60-minute group meeting limit, and no advanced features. Standalone Teams Essentials costs $6/user/month.
Slack's premium pricing ($8.75/user/month) reflects its specialized focus on searchability, integrations, and workflow automation. Teams offers lower standalone pricing ($6/month) because many users access it free through Microsoft 365 bundles. For pure ROI, the choice depends on whether you need Slack's superior search and integrations.
Which platform is best for gaming teams?
Discord dominates gaming with superior voice quality, low-latency audio, free access, and a gaming-native community. Slack and Teams are optimized for business, not gaming. Discord's servers and channels are intuitive for raid groups, esports teams, and gaming communities.
Can I migrate from Slack to Teams or Discord?
Yes, data export is possible from Slack (via third-party tools or API), but Teams and Discord have limited import capabilities. Migration is labor-intensive and often requires manual effort. Most organizations use parallel systems during transition rather than pure migration.
How to Choose Between Slack and Microsoft Teams and Discord
Primary Use Case: Slack has Enterprise team messaging and workflows, while Microsoft Teams has Microsoft ecosystem unified communications.
Pricing Model: Slack has Freemium with $8.75/user/month pro plan, while Microsoft Teams has Free with Microsoft 365 (included) or $6/user/month standalone.
Message Search Quality: Slack has Industry-leading full-text search, while Microsoft Teams has Basic search with limitations in large workspaces.
Built-in Video/Audio Calls: Slack has Limited (1-on-1 only in free tier), while Microsoft Teams has Full meeting suite with up to 10,000 participants.
Third-party Integrations: Slack has 2,000+ apps via App Marketplace, while Microsoft Teams has 500+ connectors via Microsoft ecosystem.
Consider: Enterprise Security & Compliance
Enterprise Security & Compliance: Slack has SOC 2 Type II, HIPAA, FedRAMP certified, while Microsoft Teams has Enterprise-grade with advanced threat protection.
Learning Curve: Slack has Moderate, intuitive interface, while Microsoft Teams has Steep, complex feature set.