ocr: Request for Redesign System Change Enhancement, or Enhancement New Budget Simulate Model Correct Model's With Proposed Assumptions & Changes Data No Performance No Ar Model's TeS Expectations Mec Assumptions & Data Valid? Yes: Build Proposed Enhancement, 3rd Run Stress & Phase Load Tests Validate Model wich Data From Stress & Load Tests Explore Performance No Alternative Design Expectations Met? Options For Module-Reboild YGS Run Integrated Test, Refine Model, Deploy Enhancement FIGURE 2 Post-deployment enhancements and changes.