The Demo practice is a show-and-tell presentation and demonstration of the working software built in the Iteration as it ends. It is presented to the stakeholders of the project.
Demos increase visibility to the stakeholders, increase product utility by giving the customer a concrete system to evaluate, and support iterations. This means they have a secondary effect on business values directly affected by iterations.
On Caleb the Consultant’s advice, the team agreed to have a demo at the end of each iteration—they had agreed to “suspend their disbelief” for a few months until they could judge for themselves the effectiveness of each practice.
The team didn’t have much to show at the first iteration. The stakeholders ...