5G networks will require changes to mobile backhaul that current networks cannot support. 5G will use higher frequency spectrum that has shorter range, requiring more densely placed cell sites that need high-capacity fiber backhaul connections in new locations. Additionally, 5G architecture like network slicing places new demands on backhaul for assurance of different service level agreements. Wholesale backhaul services from independent infrastructure providers will play an important role in enabling 5G deployment by providing the fiber connectivity and management that mobile operators require for small cells and ensuring service levels across sliced networks.