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Trim the Tail Allowance (Iteration N)

The trim the tail factor calculates a period of time which can be used throughout the project's timeline. This creates a bank of time which can be drawn from at any point in the project's timeline.

The trim the tail allowance is used to add a chunk of time into the project to account for any bugs or minor improvements which may pop up. Experience has shown us that every project requires periods of cleaning up time where the team needs time to pause on active development, and instead focus on the work they have already done. Whether it is fixing minor bugs which have been put off, addressing technical debt, or implementing minor improvements which have come from user feedback, it's important that we get some time to clean up.

The trim the tail factor calculates a period of time which can be used throughout the project's timeline. This creates a bank of time which can be drawn from at any point in the project's timeline. When the squad lead and the project manager agree it is required, the standard development progress can be paused, and the team can enter into an iteration N. The length of this iteration can vary depending upon the amount of work which is required. This period of time is then taken from the bank and the running tally is updated.

Currently, the trim the tail is calculated as a 1.25^ multiplier on the time estimate (including risk and Allocation Factor).

^These modifier amounts are a recommendation based on our experience.

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