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10.6 Timing of Feature Preparation

When do you begin the preparation of features? The lean guideline is to wait until the last responsible moment (LRM)—the point at which any further delay would result in unacceptable costs. How you apply this principle depends on the planning approach you’re using.

In a Kanban system, you prepare each feature as it approaches the top of the backlog, with a lead time of about six weeks for large features and two to four weeks for smaller ones.

If the teams are using the alternative planning approach—timeboxing—you prepare the group of features lined up for the upcoming quarter starting about halfway (six weeks) into the prior quarter. Some organizations prepare these features in a reserved iteration (e.g., SAFe’s Innovation and Planning [IP] Iteration),3 but this is generally not advised. We look at arguments for and against reserved iterations (aka hardening iterations) in Chapter 17.

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