[{"data":1,"prerenderedAt":685},["ShallowReactive",2],{"navigation-docs_en":3,"stack-stack_en":51},[4],{"title":5,"path":6,"stem":7,"children":8,"page":25},"En","/en","en",[9],{"title":10,"path":11,"stem":12,"children":13,"page":25},"Docs","/en/docs","en/1.docs",[14,26],{"title":15,"path":16,"stem":17,"children":18,"icon":25},"Getting Started","/en/docs/getting-started","en/1.docs/1.getting-started/1.index",[19,21],{"title":20,"path":16,"stem":17,"children":-1},"Introduction",{"title":22,"path":23,"stem":24,"children":-1},"Migration Roadmap","/en/docs/getting-started/migration-fahrplan","en/1.docs/1.getting-started/2.migration-fahrplan",false,{"title":27,"path":28,"stem":29,"children":30,"page":25},"Technologies","/en/docs/technologies","en/1.docs/2.technologies",[31,35,39,43,47],{"title":32,"path":33,"stem":34,"children":-1},"Nextcloud","/en/docs/technologies/nextcloud","en/1.docs/2.technologies/1.nextcloud",{"title":36,"path":37,"stem":38,"children":-1},"Matrix / Element","/en/docs/technologies/matrix","en/1.docs/2.technologies/2.matrix",{"title":40,"path":41,"stem":42,"children":-1},"ONLYOFFICE","/en/docs/technologies/onlyoffice","en/1.docs/2.technologies/3.onlyoffice",{"title":44,"path":45,"stem":46,"children":-1},"Ubuntu Linux","/en/docs/technologies/ubuntu","en/1.docs/2.technologies/4.ubuntu",{"title":48,"path":49,"stem":50,"children":-1},"Keycloak","/en/docs/technologies/keycloak","en/1.docs/2.technologies/5.keycloak",{"id":52,"title":53,"body":54,"cta":660,"description":670,"extension":671,"hero":672,"meta":678,"navigation":25,"path":679,"seo":680,"stem":683,"__hash__":684},"stack_en/en/6.open-source-stack.md","Out of Microsoft – completely and permanently",{"type":55,"value":56,"toc":647},"minimark",[57,61,66,142,147,151,205,211,215,268,271,275,317,323,327,393,399,403,443,449,453,510,515,518,590,598,602,613,641],[58,59,60],"p",{},"This stack fully replaces Microsoft 365, Azure AD, Windows and all other proprietary products with open-source alternatives – hosted in Germany, controlled by you.",[62,63,65],"h2",{"id":64},"collaboration-cloud","Collaboration & Cloud",[67,68,69,85],"table",{},[70,71,72],"thead",{},[73,74,75,79,82],"tr",{},[76,77,78],"th",{},"Microsoft Product",[76,80,81],{},"Open-Source Alternative",[76,83,84],{},"Function",[86,87,88,103,116,129],"tbody",{},[73,89,90,94,100],{},[91,92,93],"td",{},"OneDrive / SharePoint",[91,95,96],{},[97,98,99],"strong",{},"Nextcloud Files",[91,101,102],{},"File sync, sharing, versioning",[73,104,105,108,113],{},[91,106,107],{},"Office Online",[91,109,110],{},[97,111,112],{},"ONLYOFFICE Docs",[91,114,115],{},"Browser-based editing – full MS compatibility, directly in Nextcloud",[73,117,118,121,126],{},[91,119,120],{},"Microsoft Teams (Meetings)",[91,122,123],{},[97,124,125],{},"Nextcloud Talk",[91,127,128],{},"Video, chat, screen sharing – directly in the browser",[73,130,131,134,139],{},[91,132,133],{},"Microsoft Forms",[91,135,136],{},[97,137,138],{},"Nextcloud Forms",[91,140,141],{},"Surveys and forms",[58,143,144,146],{},[97,145,32],{}," runs on a dedicated Hetzner server (from ~€16/month for 20 users) and is subject exclusively to German law.",[62,148,150],{"id":149},"communication-messaging","Communication & Messaging",[67,152,153,164],{},[70,154,155],{},[73,156,157,159,161],{},[76,158,78],{},[76,160,81],{},[76,162,163],{},"Special Feature",[86,165,166,179,192],{},[73,167,168,171,176],{},[91,169,170],{},"Microsoft Teams (Chat)",[91,172,173],{},[97,174,175],{},"Element / Matrix",[91,177,178],{},"Federated, E2E-encrypted, no vendor lock-in",[73,180,181,184,189],{},[91,182,183],{},"Outlook",[91,185,186],{},[97,187,188],{},"Thunderbird",[91,190,191],{},"Full-featured desktop mail client, OpenPGP integration",[73,193,194,197,202],{},[91,195,196],{},"Exchange Online",[91,198,199],{},[97,200,201],{},"Mailbox.org",[91,203,204],{},"Privacy-compliant email service, hosted in Germany, GDPR-compliant",[58,206,207,210],{},[97,208,209],{},"Matrix/Element"," is used by the European Commission (32,000 employees), the German Bundeswehr and over 40 German universities.",[62,212,214],{"id":213},"desktop-operating-system","Desktop & Operating System",[67,216,217,228],{},[70,218,219],{},[73,220,221,223,225],{},[76,222,78],{},[76,224,81],{},[76,226,227],{},"Note",[86,229,230,243,256],{},[73,231,232,235,240],{},[91,233,234],{},"Windows 10/11",[91,236,237],{},[97,238,239],{},"Ubuntu LTS",[91,241,242],{},"Stable everyday use, long support cycles",[73,244,245,248,253],{},[91,246,247],{},"Windows (Desktop)",[91,249,250],{},[97,251,252],{},"KDE Plasma",[91,254,255],{},"Familiar interface for Windows switchers",[73,257,258,261,265],{},[91,259,260],{},"Microsoft Office",[91,262,263],{},[97,264,40],{},[91,266,267],{},"Writer, Calc, Impress – full compatibility with DOCX/XLSX, familiar interface",[58,269,270],{},"The migration from Windows to Linux generally goes smoothly for standard workstations. For industry-specific software we check compatibility in advance.",[62,272,274],{"id":273},"mobile-smartphones","Mobile & Smartphones",[67,276,277,289],{},[70,278,279],{},[73,280,281,284,286],{},[76,282,283],{},"Product / Service",[76,285,81],{},[76,287,288],{},"Description",[86,290,291,304],{},[73,292,293,296,301],{},[91,294,295],{},"Android (Google)",[91,297,298],{},[97,299,300],{},"GrapheneOS",[91,302,303],{},"Hardened, de-googled Android – for Pixel devices, ideal for business use",[73,305,306,309,314],{},[91,307,308],{},"Exchange ActiveSync",[91,310,311],{},[97,312,313],{},"Nextcloud Mobile",[91,315,316],{},"Calendar, contacts and files via DAVx⁵",[58,318,319,320,322],{},"For most SMB employees, ",[97,321,300],{}," with the Nextcloud calendar is fully sufficient.",[62,324,326],{"id":325},"it-infrastructure","IT Infrastructure",[67,328,329,340],{},[70,330,331],{},[73,332,333,335,337],{},[76,334,78],{},[76,336,81],{},[76,338,339],{},"Use Case",[86,341,342,355,367,380],{},[73,343,344,347,352],{},[91,345,346],{},"Hyper-V / Azure VM",[91,348,349],{},[97,350,351],{},"Proxmox VE",[91,353,354],{},"Virtualization platform for own servers",[73,356,357,360,364],{},[91,358,359],{},"Azure Active Directory",[91,361,362],{},[97,363,48],{},[91,365,366],{},"Identity & Access Management, SSO, LDAP",[73,368,369,372,377],{},[91,370,371],{},"VPN (Azure)",[91,373,374],{},[97,375,376],{},"WireGuard",[91,378,379],{},"Modern, lightweight VPN protocol",[73,381,382,385,390],{},[91,383,384],{},"Windows Defender Firewall",[91,386,387],{},[97,388,389],{},"OPNsense",[91,391,392],{},"Open-source firewall and router",[58,394,395,398],{},[97,396,397],{},"Proxmox"," is the most widely used open-source virtualization platform in Europe and forms the foundation of our infrastructure migrations.",[62,400,402],{"id":401},"business-erp","Business & ERP",[67,404,405,415],{},[70,406,407],{},[73,408,409,411,413],{},[76,410,78],{},[76,412,81],{},[76,414,84],{},[86,416,417,430],{},[73,418,419,422,427],{},[91,420,421],{},"Dynamics 365",[91,423,424],{},[97,425,426],{},"Odoo Community",[91,428,429],{},"CRM, accounting, warehouse, HR in one system",[73,431,432,435,440],{},[91,433,434],{},"SharePoint (Documents)",[91,436,437],{},[97,438,439],{},"Paperless-ngx",[91,441,442],{},"Document management with OCR and tagging",[58,444,445,448],{},[97,446,447],{},"Odoo"," is modular – you start with CRM and invoicing and expand step by step.",[62,450,452],{"id":451},"security-backup","Security & Backup",[67,454,455,465],{},[70,456,457],{},[73,458,459,461,463],{},[76,460,78],{},[76,462,81],{},[76,464,84],{},[86,466,467,480,497],{},[73,468,469,472,477],{},[91,470,471],{},"1Password / LastPass",[91,473,474],{},[97,475,476],{},"Vaultwarden",[91,478,479],{},"Self-hosted password manager (Bitwarden-compatible)",[73,481,482,485,494],{},[91,483,484],{},"Azure Backup",[91,486,487,490,491],{},[97,488,489],{},"Restic"," + ",[97,492,493],{},"BorgBackup",[91,495,496],{},"Encrypted, deduplicated backups",[73,498,499,502,507],{},[91,500,501],{},"Microsoft Defender",[91,503,504],{},[97,505,506],{},"CrowdSec",[91,508,509],{},"Collective threat detection and IP reputation",[58,511,512,514],{},[97,513,476],{}," runs on any small server and fully replaces expensive password manager subscriptions.",[62,516,22],{"id":517},"migration-roadmap",[67,519,520,533],{},[70,521,522],{},[73,523,524,527,530],{},[76,525,526],{},"Phase",[76,528,529],{},"Duration",[76,531,532],{},"Focus",[86,534,535,546,557,568,579],{},[73,536,537,540,543],{},[91,538,539],{},"1. Analysis",[91,541,542],{},"1–4 weeks",[91,544,545],{},"Inventory, risk assessment, scheduling",[73,547,548,551,554],{},[91,549,550],{},"2. Infrastructure",[91,552,553],{},"1–3 weeks",[91,555,556],{},"Set up Proxmox, Keycloak, Mailbox.org",[73,558,559,562,565],{},[91,560,561],{},"3. Collaboration",[91,563,564],{},"2–4 weeks",[91,566,567],{},"Nextcloud, Matrix/Element, ONLYOFFICE",[73,569,570,573,576],{},[91,571,572],{},"4. Workstations",[91,574,575],{},"2–6 weeks",[91,577,578],{},"Linux, ONLYOFFICE, training",[73,580,581,584,587],{},[91,582,583],{},"5. Completion",[91,585,586],{},"1–2 weeks",[91,588,589],{},"Stabilization, cancel Microsoft licenses",[58,591,592,593,597],{},"The full process is described in our ",[594,595,596],"a",{"href":23},"Migration Roadmap →",".",[62,599,601],{"id":600},"cost-comparison","Cost Comparison",[58,603,604,605,608,609,612],{},"A typical SMB with ",[97,606,607],{},"20 employees"," pays for Microsoft 365 Business Premium ",[97,610,611],{},"approx. €280/month"," (as of 2025). The comparable open-source stack costs:",[614,615,616,623,629,635],"ul",{},[617,618,619,622],"li",{},[97,620,621],{},"Hetzner server"," (2× CX21): ~€12/month",[617,624,625,628],{},[97,626,627],{},"Hetzner storage",": ~€9/month",[617,630,631,634],{},[97,632,633],{},"Backup",": ~€2/month",[617,636,637,640],{},[97,638,639],{},"Total running costs",": ~€23/month",[58,642,643,644,597],{},"The one-time migration costs typically pay for themselves ",[97,645,646],{},"within 6–12 months",{"title":648,"searchDepth":649,"depth":649,"links":650},"",2,[651,652,653,654,655,656,657,658,659],{"id":64,"depth":649,"text":65},{"id":149,"depth":649,"text":150},{"id":213,"depth":649,"text":214},{"id":273,"depth":649,"text":274},{"id":325,"depth":649,"text":326},{"id":401,"depth":649,"text":402},{"id":451,"depth":649,"text":452},{"id":517,"depth":649,"text":22},{"id":600,"depth":649,"text":601},{"title":661,"description":662,"links":663},"Ready to make the switch?","We guide you step by step – from the analysis to training your employees.",[664,667],{"label":665,"to":666},"Free initial consultation","/en/pricing",{"label":668,"to":23,"variant":669},"Migration roadmap","subtle","Nextcloud instead of OneDrive, Linux instead of Windows, Mailbox.org instead of Exchange – a battle-tested stack that fully replaces Microsoft 365.","md",{"links":673},[674,676],{"label":675,"to":666},"Get migration advice",{"label":677,"to":23,"variant":669},"Read migration roadmap",{},"/en/open-source-stack",{"title":681,"description":682},"Replace Microsoft 365 – the complete stack | europioneer","Nextcloud, Matrix, ONLYOFFICE, Proxmox and more – a proven open-source stack for SMBs that want to become independent from Microsoft.","en/6.open-source-stack","puX0Mp75gauYTNthlo2k1xHeLjLKVAB_uxvi9nFKRtI",1778110615011]