"We had outsourced the provision of our email to a third party who delivered us a hosted Microsoft Exchange and Outlook service. In addition we used local copies of Office 2003 as our productivity tool but this did not provide us with much in the way of collaboration. We wanted to move to a platform that gave our users more freedom as when they were away from the office they were only able to access email and Office remotely via our VPN. The idea of bringing all our systems in-house was looked at but we did not want to design, build and support our own Exchange infrastructure as we were working on other more business beneficial projects at the time and did not want to remove resources from these."