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To manage the rising prevalence of type 2 diabetes mellitus, sustainable diabetes prevention programs are needed. In this study, a process evaluation was conducted to qualitatively understand perceived successes and challenges of a diabetes prevention program situated in the community. This study took place in the first year of a multiyear project. Semistructured interviews were conducted with a sample of women clients (n = 14) postprogram and trainers (n = 10) 9 months into program implementation. Interviews were audio-recoded, transcribed verbatim, and analyzed using a Template Approach. Data were first analyzed deductively into two categories that aligned with the study's purpose (successes and challenges). Second, an inductive analysis was used to understand program delivery processes within each category. Clients and trainers expressed (a) program successes related to recruitment strategy, outlook on making behavior changes, and communication style used within the program and (b) program challenges surrounding effort of learning and applying the communication strategy, usefulness of program applications and tools, and program fit. This evaluation provides practical implications and future directions for diabetes prevention programs, and has informed tailoring and expansion of the program of focus. Results demonstrate the success of motivational interviewing from both client and trainer perspectives and the impact of community partnerships to increase prediabetes awareness in the community. Overall, the program's diabetes prevention and behavior change strategies coupled with a client-centered approach facilitated women clients in making diet and exercise modifications. [ABSTRACT FROM AUTHOR]