[{"data":1,"prerenderedAt":430},["ShallowReactive",2],{"navigation-docs_en":3,"/en/blog/eurostack-digital-sovereignty-posts_en":51,"/en/blog/eurostack-digital-sovereignty-surround-posts_en":419},[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,"authors":54,"badge":60,"body":62,"date":407,"description":408,"extension":409,"faq":410,"howto":410,"image":411,"meta":413,"navigation":414,"path":415,"seo":416,"stem":417,"__hash__":418},"posts_en/en/3.blog/5.eurostack-digital-sovereignty.md","EuroStack, Simply Explained – European Building Blocks for Your IT",[55],{"name":56,"to":57,"avatar":58},"Michael Wolf","https://snowblue.de/about",{"src":59},"/michael.webp",{"label":61},"Open Source",{"type":63,"value":64,"toc":396},"minimark",[65,69,78,83,86,148,151,155,183,187,190,228,237,241,268,271,275,282,365,368,372,375,378,382,389],[66,67,53],"h1",{"id":68},"eurostack-simply-explained-european-building-blocks-for-your-it",[70,71,72,73,77],"p",{},"Under the name ",[74,75,76],"strong",{},"EuroStack",", a nice idea is being discussed in Europe: lots of individual European technologies should fit together like building blocks – from the data centre all the way to the app on your phone. It sounds big, but it has a very practical side. Many of these building blocks already exist, and they're open source.",[79,80,82],"h2",{"id":81},"what-does-stack-mean","What does \"stack\" mean?",[70,84,85],{},"A \"stack\" is simply a pile of layers that build on each other. In IT, it looks roughly like this:",[87,88,89,105],"table",{},[90,91,92],"thead",{},[93,94,95,99,102],"tr",{},[96,97,98],"th",{},"Layer",[96,100,101],{},"What it includes",[96,103,104],{},"Examples",[106,107,108,122,135],"tbody",{},[93,109,110,116,119],{},[111,112,113],"td",{},[74,114,115],{},"Infrastructure",[111,117,118],{},"Data centres and servers",[111,120,121],{},"European hosting providers like Hetzner, OVHcloud, IONOS or Scaleway",[93,123,124,129,132],{},[111,125,126],{},[74,127,128],{},"Platform",[111,130,131],{},"Operating systems and foundations",[111,133,134],{},"Linux, open databases",[93,136,137,142,145],{},[111,138,139],{},[74,140,141],{},"Applications",[111,143,144],{},"The programs you use",[111,146,147],{},"Nextcloud, Element, ONLYOFFICE, Collabora, OpenProject",[70,149,150],{},"The idea behind EuroStack: there should be good European options for every layer that work well together.",[79,152,154],{"id":153},"why-is-this-exciting","Why is this exciting?",[156,157,158,165,171,177],"ul",{},[159,160,161,164],"li",{},[74,162,163],{},"Choice:"," More providers mean more freedom.",[159,166,167,170],{},[74,168,169],{},"Open standards:"," Building blocks that use open formats are easier to combine and swap out.",[159,172,173,176],{},[74,174,175],{},"Closeness:"," Support, data centres and contracts are often in your language and time zone.",[159,178,179,182],{},[74,180,181],{},"Community:"," Many projects are developed further by a large, active community.",[79,184,186],{"id":185},"what-you-can-already-use-today","What you can already use today",[70,188,189],{},"You don't have to wait for some big project to be finished. For small businesses, law firms, practices and families, mature solutions already exist:",[156,191,192,198,204,210,216,222],{},[159,193,194,197],{},[74,195,196],{},"Files, calendar, contacts:"," Nextcloud",[159,199,200,203],{},[74,201,202],{},"Chat and video calls:"," Element (Matrix)",[159,205,206,209],{},[74,207,208],{},"Office documents:"," ONLYOFFICE or Collabora",[159,211,212,215],{},[74,213,214],{},"Passwords:"," Vaultwarden (works with the Bitwarden apps)",[159,217,218,221],{},[74,219,220],{},"Single login:"," Keycloak",[159,223,224,227],{},[74,225,226],{},"Email:"," European providers or your own mail server",[70,229,230,231,236],{},"You'll find a bigger overview under ",[232,233,235],"a",{"href":234},"/en/alternativen","Alternatives",".",[79,238,240],{"id":239},"how-to-get-started","How to get started",[242,243,244,250,256,262],"ol",{},[159,245,246,249],{},[74,247,248],{},"Take stock:"," Which services do you use today?",[159,251,252,255],{},[74,253,254],{},"Start small:"," Pick one area, for example the password manager or your files.",[159,257,258,261],{},[74,259,260],{},"Trial phase:"," Try the new solution in parallel for a few weeks.",[159,263,264,267],{},[74,265,266],{},"Expand:"," If it fits, the next building block follows.",[70,269,270],{},"There's no need for a big bang. Step by step is usually more relaxed and cheaper.",[79,272,274],{"id":273},"what-open-standards-have-to-do-with-it","What \"open standards\" have to do with it",[70,276,277,278,281],{},"For building blocks from different providers to fit together, you need shared rules. These are ",[74,279,280],{},"open standards"," – publicly documented formats and protocols that anyone may use. A few everyday examples:",[87,283,284,297],{},[90,285,286],{},[93,287,288,291,294],{},[96,289,290],{},"Standard",[96,292,293],{},"What for",[96,295,296],{},"What it gives you",[106,298,299,310,321,332,343,354],{},[93,300,301,304,307],{},[111,302,303],{},"IMAP / SMTP",[111,305,306],{},"Email",[111,308,309],{},"Any mail program works with any mail server",[93,311,312,315,318],{},[111,313,314],{},"CalDAV / CardDAV",[111,316,317],{},"Calendar and contacts",[111,319,320],{},"Appointments sync across phone, laptop and web",[93,322,323,326,329],{},[111,324,325],{},"WebDAV",[111,327,328],{},"Files",[111,330,331],{},"Folders can be connected to many programs",[93,333,334,337,340],{},[111,335,336],{},"ODF",[111,338,339],{},"Office documents",[111,341,342],{},"Files stay readable, whatever program you use",[93,344,345,348,351],{},[111,346,347],{},"Matrix",[111,349,350],{},"Chat",[111,352,353],{},"Different servers can talk to each other",[93,355,356,359,362],{},[111,357,358],{},"OpenID Connect",[111,360,361],{},"Login",[111,363,364],{},"One login for many services",[70,366,367],{},"If you rely on standards like these, you can swap individual building blocks later without starting from scratch.",[79,369,371],{"id":370},"a-practical-example","A practical example",[70,373,374],{},"Imagine a small tax office with six people. Their files live in a Nextcloud with a hosting provider in Germany. Calendars and contacts sync to their phones via CalDAV and CardDAV. For internal chat there's a small Matrix server, and passwords are kept in Vaultwarden. Everyone logs in through one shared login.",[70,376,377],{},"If the office ever wants to change hosting providers, the same software simply moves. The apps on the phones stay, and so do the habits. That's exactly the idea behind a well-assembled \"stack\".",[79,379,381],{"id":380},"conclusion","Conclusion",[70,383,384,385,236],{},"EuroStack is an idea that shows: Europe has lots of good IT building blocks, and open source plays a big part. The nice thing is that you can benefit from it today – with software you understand, on servers you know. If you'd like some guidance along the way, have a look at ",[232,386,388],{"href":387},"/en/consulting","Consulting",[70,390,391,392,236],{},"If you'd like to give it a try, I'm happy to help – ",[232,393,395],{"href":394},"/en/contact","just drop me a line",{"title":397,"searchDepth":398,"depth":398,"links":399},"",2,[400,401,402,403,404,405,406],{"id":81,"depth":398,"text":82},{"id":153,"depth":398,"text":154},{"id":185,"depth":398,"text":186},{"id":239,"depth":398,"text":240},{"id":273,"depth":398,"text":274},{"id":370,"depth":398,"text":371},{"id":380,"depth":398,"text":381},"2026-05-05T00:00:00.000Z","What's behind the idea of \"EuroStack\"? A friendly overview of European and open-source building blocks you can already use today.","md",null,{"src":412},"/img/blog/photo-1527176930608-09cb256ab504.webp",{},true,"/en/blog/eurostack-digital-sovereignty",{"title":53,"description":408},"en/3.blog/5.eurostack-digital-sovereignty","WguBY5XGDN-OfQH6dIUE6eMBjg3QSazON45RUqSXYtA",[420,425],{"title":421,"path":422,"stem":423,"description":424,"children":-1},"The CLOUD Act, Simply Explained – and What It Means for Your Data","/en/blog/cloud-act-2026","en/3.blog/4.cloud-act-2026","What is the CLOUD Act, and why are many businesses interested in cloud solutions in Europe? A calm explanation without jargon.",{"title":426,"path":427,"stem":428,"description":429,"children":-1},"An Alternative to Microsoft Teams – Introducing Element and Matrix","/en/blog/microsoft-teams-alternative","en/3.blog/6.microsoft-teams-alternative","Chat, video calls and screen sharing – with open source. Here's how Element works as a Teams alternative, even for small teams.",1792720370740]