INTRODUCTION
Microsoft Office 365, which became generally available in the summer of 2011, is undoubtedly one of the most popular SaaS applications, used by businesses of all sizes and in all industries, all around the world.
The popularity of Office 365 is well-confirmed by the following statistics:
1 in 5 corporate employees now use an Office 365 cloud service.
Office 365 is the most widely used cloud service by user count.