FIG. 1. The newly-built Edge building in Amsterdam is known for its IoT backbone and the ubiquitous deployment of Power over Ethernet as a backbone that enables advanced applications such as space optimization, but building retrofits need the flexibility of a wireless network and a standard intra-luminaire bus can enable flexible choices in inter-luminaire connectivity. (Photo credit: Image courtesy of Deloitte Group, photographer Ronald Tilleman; http://tilleman.nl.)