{"slug":"microsoft-teams-vs-mattermost)","question":"Microsoft Teams vs Mattermost","answer":"Microsoft Teams is a cloud-based enterprise collaboration platform with 300+ million users and deep Office 365 integration, while Mattermost is an open-source, self-hosted alternative offering greater control and privacy for organizations avoiding vendor lock-in.","answer_curated":true,"verdict":"Choose Microsoft Teams if your organization uses Office 365/Microsoft 365, requires maximum integration with enterprise tools, and prioritizes ease of deployment and vendor support. Choose Mattermost if you need self-hosted control, open-source transparency, HIPAA/FedRAMP compliance requirements, or want to avoid vendor lock-in and reduce per-user licensing costs.","keyDifferences":[{"label":"Deployment Model","winner":"b","entityAValue":"Cloud-only (SaaS)","entityBValue":"Self-hosted or cloud"},{"label":"Source Code Access","winner":"b","entityAValue":"Proprietary, closed-source","entityBValue":"Open-source (AGPL v3)"},{"label":"Active Monthly Users","winner":"a","entityAValue":"300+ million","entityBValue":"500,000+ deployments"},{"label":"Office 365 Integration","winner":"a","entityAValue":"Native, seamless integration","entityBValue":"Limited third-party plugins"},{"label":"Starting Cost (Monthly)","winner":"b","entityAValue":"$4-12.50 per user","entityBValue":"$0 (open-source), $39/user/month (managed)"}],"winner":{"slug":"mattermost","name":"Mattermost"},"confidence":"high","entities":[{"name":"Microsoft Teams","slug":"microsoft-teams","url":"https://www.aversusb.net/entity/microsoft-teams","alternativesUrl":"https://www.aversusb.net/api/v1/alternatives/microsoft-teams"},{"name":"Mattermost","slug":"mattermost","url":"https://www.aversusb.net/entity/mattermost","alternativesUrl":"https://www.aversusb.net/api/v1/alternatives/mattermost"}],"faqs":[{"question":"Can I self-host Microsoft Teams on my own servers?","answer":"No, Microsoft Teams is cloud-only (SaaS) and cannot be self-hosted. Microsoft does not offer on-premises deployment. If data residency and self-hosting are requirements, Mattermost is the appropriate alternative."},{"question":"Is Mattermost compatible with Microsoft Office files?","answer":"Mattermost can preview Office files (.docx, .xlsx, .pptx) through integrations but does not have native collaborative editing like Teams does with Office 365. For organizations requiring real-time co-authoring of Office documents, Teams is superior."},{"question":"What's the total cost difference for a 500-person company over 3 years?","answer":"Teams: $72,000-225,000 (at $4-12.50/user/month). Mattermost self-hosted: minimal cost (infrastructure only, estimated $15,000-30,000 for IT ops). Mattermost managed cloud: $58,500. Self-hosted Mattermost saves 70-80% but requires IT resources."}],"attribution":{"source":"A Versus B","url":"https://www.aversusb.net/compare/microsoft-teams-vs-mattermost)","license":"CC BY 4.0","citationFormat":"According to A Versus B (https://www.aversusb.net/compare/microsoft-teams-vs-mattermost)), Microsoft Teams is a cloud-based enterprise collaboration platform with 300+ million users and deep Office 365 integration, while Mattermost is an open-source, self-hosted alternative offering greater","dateModified":"2026-07-07T09:44:30.099Z"},"relatedQuestionsUrl":"https://www.aversusb.net/api/faq/microsoft-teams-vs-mattermost)","relatedComparisonsUrl":"https://www.aversusb.net/api/v1/related/microsoft-teams-vs-mattermost)","knowledgeGraphUrl":"https://www.aversusb.net/api/knowledge-graph/microsoft-teams-vs-mattermost)","claimReviewSchema":{"@context":"https://schema.org","@type":"ClaimReview","@id":"https://www.aversusb.net/compare/microsoft-teams-vs-mattermost)#claimreview","url":"https://www.aversusb.net/compare/microsoft-teams-vs-mattermost)","inLanguage":"en-US","isAccessibleForFree":true,"conditionsOfAccess":"Free","claimReviewed":"Microsoft Teams vs Mattermost","reviewBody":"Microsoft Teams is a cloud-based enterprise collaboration platform with 300+ million users and deep Office 365 integration, while Mattermost is an open-source, self-hosted alternative offering greater control and privacy for organizations avoiding vendor lock-in.","datePublished":"2026-07-07T09:44:30.059Z","dateModified":"2026-07-07T09:44:30.099Z","reviewRating":{"@type":"Rating","ratingValue":5,"worstRating":1,"bestRating":5,"alternateName":"High Confidence"},"author":{"@type":"Organization","@id":"https://www.aversusb.net/#organization","name":"A Versus B","url":"https://www.aversusb.net"},"itemReviewed":{"@type":"WebPage","@id":"https://www.aversusb.net/compare/microsoft-teams-vs-mattermost)","url":"https://www.aversusb.net/compare/microsoft-teams-vs-mattermost)","name":"Microsoft Teams vs Mattermost","inLanguage":"en-US"}}}