Even given the lackluster sales of its Surface tablet, Microsoft (NASDAQ:MSFT) just had a great first quarter. Revenue is up, margins are solid, and the company is sitting on a gigantic stack of cash.

The reasons for Microsoft's continued growth aren't as glamorous as a heavily publicized tablet, but they could help keep the company afloat while it works on reaching the top of the tech industry once again. In the video below, Fool contributor Caroline Bennett takes a closer look at Microsoft's successful quarter.