Many modern broadband networks today are built with three areas of enhancement: 1. containerized implementation, 2. serviced-based architecture (SBA), and 3. control and user plane separation (CUPS). 5G networks are an example network that have all three traits. DOCSIS networks, on the other hand, have yet to define and benefit from SBA and CUPS. This paper focuses on CUPS. We discuss why it is useful and how to implement it. We also cover practical use cases that CUPS can enable. While we focus on DOCSIS, PON, and 5G networks, the ideas presented in this paper are extendable to Wi-Fi and fixed wireless access (FWA). These ideas build upon the authors’ previous white paper on cable and mobile convergence .