The city IT staff are starting to use virtualisation desktop infrastructure (VDI) based on Windows Server 2012 to take advantage of the desktop virtualization enhancements included in the server platform. By using Windows Server 2012 Hyper-V to consolidate its VDI environment, the City of Barcelona can expand desktop virtualisation to more employees and provide a better user experience. All of the city's new productivity services (including Microsoft Lync, Sharepoint and Exchange) have been implemented using Hyper-V. In addition, Windows Server 2012 offers enhanced security for contractors accessing servers behind the firewall.
See http://www.microsoft.com/presspass/emea/presscentre/pressreleases/October2012/08-10-Cloud-OS.mspx for the full story and background.
TECHWORLD also has an article at http://news.techworld.com/virtualisation/3402275/city-of-barcelona-deploys-windows-server-2012-consolidate-its-vdi/ on one of their projects.