ABS-CBN (an initialism of its two predecessors' names, Alto Broadcasting System and Chronicle Broadcasting Network) is a Philippine commercial broadcast network that serves as the flagship property of ABS-CBN Corporation, a company under Lopez Holdings Corporation owned by the López family. The network is headquartered at the ELJ Communications Center and ABS-CBN Broadcasting Center in Quezon City, with additional offices and production facilities in 25 major cities including Baguio, Naga, Bacolod, Iloilo, Cebu, Davao, and Bulacan, where ABS-CBN's production and post-production facility in Horizon IT Park is located. ABS-CBN is colloquially referred to as the Kapamilya Network; the branding was originally introduced in 1999 and was officially introduced in 2003 during the celebration of it