This document summarizes Beatrice Witzgall's presentation on IoT lighting control development, deployment, and scalability. The presentation discusses challenges encountered in real IoT lighting control deployments, including network firewall setup, unresponsive bulbs, and updating client preferences. It also addresses defining responsibilities of stakeholders such as where hardware warranties end and software support begins. Case studies of IoT lighting deployments in hotels are presented to illustrate issues solved and remaining challenges.