Microsoft's Business division, which manages the company's Office cash cow, recorded a 5 percent revenue bump in the first quarter over the same period in 2012, an increase driven by a surge in enterprises signing long-term licensing agreements. Office 365, Microsoft's expanded subscription program that it's promoted for both businesses and consumers -- and on which the company is pinning plans to drive future income -- will account for about 4 percent of the division's revenue for the fiscal year, Microsoft said.