The article discusses the development and research supporting the Partners for Change Outcome Management System (PCOMS). PCOMS uses two brief measures - the Outcome Rating Scale (ORS) and Session Rating Scale (SRS) - to collect feedback from clients at each session on their progress and the therapeutic alliance. The ORS and SRS were developed to be brief and feasible for routine use. Research shows providing therapists feedback based on these measures improves client outcomes compared to treatment as usual. The article outlines how PCOMS was developed and refined, presents supporting research on the measures' psychometrics and clinical usefulness, and discusses examples of implementing PCOMS in behavioral health settings.