Lyon will phase out Microsoft Office, replacing it with open-source tools Only Office, Linux, and PostgreSQL
The transition aims to achieve digital sovereignty by reducing reliance on U.S.-based proprietary software
The city will adopt the Territoire Numérique Ouvert suite, developed with SITIV and Lyon Metropolis
This open-suite is already in use by thousands of employees across nine local governments
Lyon’s move mirrors similar decisions by European cities such as Copenhagen and Aarhus to abandon Microsoft products
The shift promises long-term flexibility, cost efficiency, and stronger local control over digital infrastructure
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