The Egyptian Ministry of State for Administrative Development (MSAD) was given the difficult task of creating the software to support transparent Egyptian elections in 2012. MSAD had a tight schedule and limited budget to develop highly scalable applications to support the 50 million eligible voters set to participate in the landmark election process that was watched by the whole world. MSAD chose Microsoft Visual Studio 2010 and Team Foundation Server 2010 to ensure the application was ready for the elections and able to handle the millions of voters using it at one time. MSAD is testing Visual Studio 2012 and sees potential to improve developer productivity even more.
You can read the full success story on Microsoft site.