The document discusses the IDeA Efficiency Exchange, a tool to facilitate collaborative knowledge sharing, benchmarking, and problem solving for local councils in the UK. It describes current challenges councils face in achieving efficiency gains and examples of notable practices. It provides a vision for the Efficiency Exchange in March 2011, including a culture of collaborative knowledge sharing, an easy-to-use technology platform, and a benchmarking tool. The role of Challenge Managers is discussed, who could help document good practices, emerging issues, and lessons learned to further support efficiency efforts across councils.