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HOW EASY IS IT TO MOVE FROM MICROSOFT?

TECHNICALLY: Very feasible. Strong FOSS alternatives exist for everything:
Windows → Linux (Ubuntu, Debian, Fedora)

Office → OnlyOffice, LibreOffice

Exchange/Teams → Matrix/Element, Nextcloud

SQL Server → PostgreSQL, MariaDB

Benefits: No per-seat licenses, data sovereignty, transparent security, longer hardware life, no forced obsolescence.

THE REAL CHALLENGE: Organizational, not technical

Legacy Windows-only apps & VBA macros (need rewriting or VMs)

User retraining & change management (people lose muscle memory)

Political will & leadership commitment (critical!)

External partner expectations (.docx, Outlook, Teams)

SUCCESS FACTORS (proven by Lyon & Gendarmerie):
• Strong political backing at highest levels
• Adequate budget & realistic timeline
• Comprehensive training programs
• Willingness to maintain hybrid systems during transition
• Local/regional procurement (Lyon: 100% French contractors)

CURRENT MOMENTUM:
Denmark, Germany (Schleswig-Holstein), Netherlands, Italy, and Slovenia are all pursuing similar digital sovereignty initiatives through FOSS

Bottom line: #France proves that digital sovereignty through open source works at massive scale (103K+ workstations). They're not reinventing wheels—they're making smart use of mature, proven technology with European hosting and governance.

Lyon Register article: theregister.com/2025/06/26/lyo…

#OpenSource #DigitalSovereignty #Linux #FOSS #France #Lyon #PublicSector #Ubuntu #Matrix #GendBuntu #Europe #Microsoft

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French city of Lyon ditching Microsoft for open source office and collab tools

: Ingredients of future software salade Lyonnaise will include Linux, PostgreSQL, and OnlyOffice

^{Simon Sharwood (The Register)}