The document discusses the open virtualized RAN (vRAN) ecosystem. It provides an overview of the ecosystem and its goals of accelerating adoption of open vRAN solutions. It describes traditional and evolving RAN architectures including centralized and virtualized RAN. It demonstrates early multi-vendor pre-5G and 5G SA proof of concept solutions using the open vRAN architecture. The demos show how the architecture enables new services through network slicing and edge computing. Finally, it discusses how the open vRAN ecosystem is accelerating the transition to software-defined mobile networks.