Search and destroy: How CoStar became a $15B juggernaut

Just before 8 a.m. on Dec. 13, 2016, two teams of sheriffs descended upon narrow streets lined with cinder block buildings in Laoag, a city in northern Philippines. They stormed a pair of office buildings, leading some onlookers to think brawls had broken out. In fact, the target was Avion BPO, a call center and research facility with U.S. clients.