Founded in the year 1975 by Bill H. Gates and Paul Gardner Allen, Microsoft has become the leading tech business across the globe. Since it was established, the primary focus of this company has been software, however, with Surface tab, this has somewhat changed. Microsoft is most well-known for its Operating System - Windows. Also, its productivity suite- Office - is the most popular in the world. For decades, Microsoft has been leading the tech industry. However, in order to compete, it keeps on adding new features, tools, products to its Office suite.