Complex sentence: In 2010, Ancestry.com expanded its domestic operations with the opening of an office in San Francisco, California, staffed with brand new engineering, product, and marketing teams geared toward developing some of Ancestry's cutting-edge technology and services.
Split into simpler sentences: In 2010, Ancestry.com expanded its location to San Francisco, California, starting its office in San Francisco with brand new engineering, product, and marketing teams. The San Francisco office is geared toward developing some of Ancestry's cutting-edge technology and services.