This suite is sufficient to prevent regressions. Every time
programmers integrate (once every few hours), they run the entire suite of regression tests to check if
anything has broken.
The team also supports their quality efforts through pair programming, energized work, and iteration
slack. These practices enhance the brainpower that each team member has available for creating highquality
software.
Deployment
XP teams keep their software ready to deploy at the end of any iteration. They deploy the software to
internal stakeholders every week in preparation for the weekly iteration demo. Deployment to real
customers is scheduled according to business needs.
20 C H A P T E R 3 : U N D E R S T A N D I N G X P
As long as the team is active, it maintains the software it has released. Depending on the organization,
the team may also support its own software (a batman is helpful in this case; see ???Iteration Planning???
in Chapter 8). In other cases, a separate support team may take over. Similarly, when the project ends,
the team may hand off maintenance duties to another team. In this case, the team creates
documentation and provides training as necessary during its last few weeks.
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