MarshPeter Marsh has been appointed as regional vice president for Comcast (NASDAQ:CMCSA) Business Services, overseeing the company's Beltway Region, which serves Maryland, Southern Delaware, Virginia, Washington, D.C., and portions of West Virginia and North Carolina. In this role, Marsh will be responsible for spearheading the continued growth of Comcast Business Services in the region, while also developing targeted sales and marketing operations to expand the company's presence within the local business community.Previously, Marsh served as vice president of Business Services for Comcast's Greater Boston Region. Prior to joining Comcast in 2007, he held positions with Winstar, Sprint, MCI and XO Communications.