follow a macro-cycle of six two-week iterations followed by a one-week iteration. I refer to this cycle as “6 × 2 + 1.” During the two-week iterations, the team works on items prioritized by the product owner. During the one-week iteration, however, the team chooses its own work. That doesn’t mean it’s play time or a week at the beach. Rather, the individuals on the team use this time to focus on what they view as priority work for the project. Programmers may perform refactorings they felt were too risky in the middle of other iterations or experiment with relevant new technologies. A tester
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