A. Having at least once a day an automated build and test process that detects integration errors early and quickly.

B. Avoiding requirements misunderstandings which may not have been detected until later in the development cycle when they are more expensive to fix.

C. Reducing the involvement of business representatives because of the increased communication and collaboration between testers and developers.

D. Capitalizing on the combined skills of business representatives, testers and developers working together to contribute to project success.