Rigorous validation establishes confidence in model reliability before deployment. Using training and testing data, teams measure performance against predefined KPIs—such as accuracy, recall, precision, or business-centric outcomes like cost savings or improved satisfaction. Iterative evaluation reveals strengths, weaknesses, or unintended biases, driving further refinement. Comprehensive performance metrics provide transparency for stakeholders, establish a baseline for ongoing monitoring, and minimize deployment risks by exposing limitations early.