One of the major challenges to deploying small cell base stations is backhaul. Without cost effective backhaul, it is too expensive to deploy small cells to address the growing demand for mobile data traffic. Existing backhaul solutions include point-to-point microwave, millimeter wave, point-to-multipoint microwave and non-line-of-sight (NLOS) wireless technologies. However, when it comes to small cells, the question is one of scalability: do such solutions allow the operator to deploy the number of small cell base stations forecasted? What would be the total cost of small cell backhaul? And, which solution provides the lowest cost? This white paper answers these questions.