AT&T Mobile Office Suite is a cloud-based, mobile collaboration solution, available in the U.S., which overcomes these challenges by providing a simple, all-in-one bundle at a predictable monthly cost. Small businesses get fast, easy, and highly-secure access to voice calls, email, calendars, instant messaging, HD video conferencing, desktop sharing, file sharing, and more. AT&T and Microsoft Corp. are making it easier than ever for small and midsized businesses to collaborate by voice, video, and web from virtually any mobile device. The new solution helps to improve employee productivity while in the office or on the go.