This document discusses measuring the success of organization development interventions. It provides an example case study of an organization called Agua that underwent an OD intervention including leadership development training and strategic planning sessions. Data was collected before and after the intervention using tools like a culture assessment, surveys, and key business metrics. The results showed improvements in areas like error rates, time to fulfill orders, turnover, and customer satisfaction. The document calculates the monetary benefits of the changes and the costs of the intervention to determine it provided a 49% ROI.