The National Science Foundation, Division of Acquisitions and Cooperative Support, intends to solicit and modify, on a sole source basis, purchase order NSFDACS09P1212 issued to Microsoft Corporation Sitz in Redmond Corporation.  The purpose of the modification is to obtain Cloud Vantage service in support of implementing Office 365 cloud services.  The modification will increase funding by $60,941.00; the period of performance for the purchase order ends on 1/27/14 and has no additional option periods.   This notice of intent is not a request for competitive quotes. This synopsis is for informational purposes only.