NIDA's Criminal Justice Drug Abuse Treatment Studies (CJ-DATS) is the primary vehicle for testing emerging treatment interventions and fostering adoption of evidence-based therapies in criminal justice settings. The papers in this issue of Drug and Alcohol Dependence use data from the CJ-DATS National Criminal Justice Treatment Practice Survey to explore the influence of organizational and system variables on access to addiction treatment and the types of services available within correctional settings. This essay provides context for the papers in this issue of Drug and Alcohol Dependence. Systems and organizational interventions that improve the delivery and quality of drug abuse treatment services are described and the potential to apply systems change thinking to addiction treatment services available in the criminal justice system is discussed. Each paper is described briefly. CJ-DATS is evolving to support research at the organizational and systems level that facilitates the implementation and sustainability of research-supported treatments and business practices in criminal justice settings.