This report examines the rapidly transforming in-building technology and market. A confluence of advanced technologies including LTE-Advanced Pro, 5G, LAA/LTE-U, CBRS, MulteFire, and IoT will merge DAS and Small Cell architectures requiring advances in C-RAN, V-RAN, MEC and Fronthaul. Public safety networks will operate in parallel with existing P25 and Tetra and will require in-building deployment for fully redundant, fault tolerant connectivity in the building. In-building system ownership will migrate to enterprise or venue-led business models as in-building systems migrate to smaller and more numerous buildings.