1. May 1999 page 1 Based on Industry Experience - Quality as a Percent of Development Costs l Price-Waterhouse 1993 –Software Quality: 40 - 55% l Knox 1993 – SEI Level One: 60% l Haley 1996 – SEI Level One: 55 - 67% – SEI Level Three: 40% Cost of Software Quality Cost of Quality: Software Quality Professional, March 1999

2. May 1999 page 2 Actual Cost of Software Quality Total Software Development Project Cost From 40 - 67 % of costs are for Software Quality! Established Cost of Software Quality in projects “Good” Project “Not So Good” Project

3. May 1999 page 3 Testing Payoffs Source of Defects - Bender & Associates Where do system problems come from? How do you test to see if these problems exist? How significant is the testing effort in each to overall system success?

4. May 1999 page 4 Test Life Cycle Model Business Need Define Requirements Design System Build System Verify Acceptance Test System Test Integration Test Unit Test Verify Validate Validates Testing happens throughout the software life cycle. Adopt a Testing Life Cycle mentality. Static Testing Dynamic Testing