The traditional model of government agencies administering hundreds of programs by themselves is giving way to one-stop services and cross-agency results. This model has been reinforced in recent legislative changes, as well. This transition implies collaboration—within agencies, among agencies, between levels of government, and between the public, private, and nonprofit sectors. Applying collaboration in diverse policy arenas, such as law enforcement, social services, transportation, homeland security, and the environment, is expanding. As networks and partnerships take on many new shapes, organizations are shifting their focus from “within” to “between.”