ForewordA decade of dedicated R&D at KEK, DESY, CERN, SLAC and other laboratories were crucial to the successful development of the concepts for a linear collider and for demonstrating that the technical goals are achievable. We are now entering the global design phase for the ILC, and test facilities, demonstration experiments and fundamental R&D will continue to be very important to helping us develop the best possible ILC design, and one that employs forward looking technology.The ATF2 builds on the considerable investment, success and strong team that were responsible for the ATF. The new features provided by ATF2 will enable us to embark on a program to test the very demanding beam delivery requirements for the ILC. In addition, this project has the feature that it is being planned and executed internationally. Therefore, it represents a useful testing ground for managing and executing a complex international accelerator project.