The US and Polish examples in the previous report are two of many which epitomize the complex choices operators will need to make about network architecture, and how that will influence the physical assets they will need to access. The balance between centralized and edge-based resources, and the distances between the two, will be important, and will vary depending on the key use cases which will drive the 5G model. While virtualization and software-defined networking (SDN) enables an MNO to be far more flexible in allocating its digital resources, those towers, data centers and local sites and servers will not be so easily rearranged, so the topologies will need to be considered carefully. Some of the options are not fully…