IPTV is becoming a mature pay TV technology now with wide-scale deployment in the Asia-Pacific region. IPTV has been most successful in markets with significant fiber deployment. Due to the difficulty of providing interactive services with traditional pay TV technologies, some cable TV operators in mature markets are exploring options to migrate to IPTV. IPTV profitability is still one of the key concerns for providers, due to the heavy investments required for content as well as the fiber infrastructure.