The report discusses the benefits of network cooperation for mobile operators, including cost reduction, improved efficiency and quality, and increased coverage and competitiveness. Network sharing is becoming more popular as network capabilities become less strategic and more commoditized. However, relatively few network-sharing deals are actually implemented due to dynamics between market leaders and smaller operators, the role of the network in gaining market advantage, and regulatory considerations. The report suggests that only a few network-sharing configurations can be successful, and misalignment on operational aspects during implementation can jeopardize the deal. The authors of the report are Karim Taga, Glen Peres, Bertrand Grau, and Clemens Schwaiger, all of whom are managing partners at Arthur D. Little.