## [Testimonial: The city of Nanterre exits Teams and SharePoint](/en/content/testimonial-city-nanterre-exits-teams-and-sharepoint) ![logo of the city of nanterre](/sites/default/files/inline-images/t%C3%A9l%C3%A9chargement%20%282%29_0.png)[Download the testimonial](https://mautic.ceo-vision.com/asset/166:retour-dexperienceville-de-nanterrepdf) “We went from Teams to GoFAST in just one month!” [![The need to replace Teams and SharePoint](/sites/default/files/styles/large/public/mairie-nanterre.jpg?itok=t7gJ-WUZ "The need to replace Teams and SharePoint")](/sites/default/files/mairie-nanterre.jpg) The need to replace Teams and SharePoint **Nanterre**, the second most inhabited commune in the **Hauts-de-Seine** department with over **97,000 residents**, made a strategic decision in January 2024 at its municipal office: to **abandon Microsoft** services (Teams, Exchange and the office suite) to strengthen its digital independence. *Discover in this* [*article* ](/en/content/urgent-need-reduce-dependency-microsoft)*why many organisations are deciding to move away from Microsoft.* [![An urgent need for a collaborative alternative](/sites/default/files/styles/large/public/banniere-ecran-gofast-sans%20icones-contour%20blanc_2024_v1.3%282%29_0_0.png?itok=nvtlgFbZ "An urgent need for a collaborative alternative")](/sites/default/files/banniere-ecran-gofast-sans%20icones-contour%20blanc_2024_v1.3%282%29_0_0.png) An urgent need for a collaborative alternative Faced with the **end of its contract** with Microsoft and the City Council's decision not to renew it, the city of Nanterre had to quickly adopt an **alternative solution capable of replacing Microsoft Teams**, then other Microsoft technologies such as **MS Office**, **the file server**, and finally **MS Exchange**. These **migrations**, particularly that of the **260 collaborative teams** in Teams and **reorganized in GoFAST**, required **advanced technical and organizational expertise**. *Discover in this* [*article* ](/en/content/urgent-need-reduce-dependency-microsoft)*why the city of Nanterre chose GoFAST to replace Microsoft.* [![Choosing GoFAST: a sovereign, highperformance alternative](/sites/default/files/styles/large/public/Webinar%20Face%20%C3%A0%20face%20Entre%20Teams%20et%20GoFAST%2C%20quelle%20solution%20permet%20de%20travailler%20le%20plus%20efficacement_0.png?itok=-5Ask1bQ "Choosing GoFAST: a sovereign, highperformance alternative")](/sites/default/files/Webinar%20Face%20%C3%A0%20face%20Entre%20Teams%20et%20GoFAST%2C%20quelle%20solution%20permet%20de%20travailler%20le%20plus%20efficacement_0.png) Choosing GoFAST: a sovereign, highperformance alternative As early as June 2022, the city of Nanterre began exploring the possibilities offered by GoFAST by installing the **Community version** on its own infrastructures. Convinced by GoFAST's **ease of use** and ability to meet its needs, the city launched a Proof of Concept (PoC) in July 2023 to assess its viability as a replacement for its current tools. The PoC quickly demonstrated GoFAST's ability to replace Teams and offer a **robust solution** for **document management** and **collaboration**, while guaranteeing the city's **sovereignty** thanks to **OnPremise hosting**. *Discover all the* [*features* ](/en/content/gofast-functionnalities-dms-ecm-digital-workplace)*of GoFAST in a table* [![A gradual, controlled change](/sites/default/files/styles/large/public/gofast-ged-mobilite-chat-webconferences_1_0.jpg?itok=Sm2xlLYh "A gradual, controlled change")](/sites/default/files/gofast-ged-mobilite-chat-webconferences_1_0.jpg) A gradual, controlled change After a successful test phase, the city of Nanterre began **deploying GoFAST** to some of its employees, i.e. 1,000 in phase 1 from January 2024. The **replacement** of **Microsoft** solutions, including **Teams** and **SharePoint**, was carried out **without any service interruption**, and the transition was completed in less than a month. **Technical scope**: The solution is deployed on the city's dedicated infrastructure, with remote **maintenance provided** by CEO-Vision SAS, guaranteeing continuous platform updates. *Discover in our* [*article* ](/en/content/urgent-need-reduce-dependency-microsoft)*the main reasons why organisations are reducing their dependence on Microsoft.* [![Promising results and successful adoption](/sites/default/files/styles/large/public/gofast-metadonnees-commentaires-ged_2_0.png?itok=3R17D89B "Promising results and successful adoption")](/sites/default/files/gofast-metadonnees-commentaires-ged_2_0.png) Promising results and successful adoption Since adopting GoFAST, Nanterre's agents have fully integrated the solution into their workflows, **reducing** their **dependence on proprietary tools** and strengthening **internal collaboration**. The absence of support requests after migration confirms the smoothness of the transition. - **No longer dependent** on proprietary Microsoft solutions - **Security and sovereignty**: OnPremise hosting for total data control - **Optimized collaboration**, highperformance web conferencing, chat and integrated document management - **Financial benefits**: Reduced costs for software licenses and subscriptions to Microsoft solutions *The city of Nanterre is not the only local authority to replace Microsoft with GoFAST. Discover our REX on the* [*Haute-Savoie department and its departure from Sharepoint*](/en/content/use-cases-feedbacks-and-webinars)*.* [Ask for a DEMO](/fr/contact-ceo-vision-gofast-digital-workplace-open-source) **Discover GoFAST with one of our project managers!** [Testimonial to download](https://mautic.ceo-vision.com/asset/166:retour-dexperienceville-de-nanterrepdf) **Download the city of Nanterre testimonial now!** [Free GoFAST Test](https://www.ceo-vision.com/fr/testez-gofast-gratuitement-pendant-30-jours) **Try GoFAST for 30 days for free!** - [Feedback](/en/taxonomy/term/128)