This document discusses open over-the-top (OTT) video content platforms. It defines OTT as streaming media distributed directly over the internet bypassing traditional distribution methods. The document then covers OTT market drivers and business models. It examines the most popular OTT platform in Vietnam and challenges for successful OTT platforms including scalability, content acquisition and management, audience engagement, and business models. Finally, it proposes a modular technical architecture for an open OTT video platform using open source technologies.