Demo: diagnosing a slow lead time from pipeline data
On This Lesson 3 topics
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In this lesson
break lead time into stages to find where changes wait; prepares SRB-014-LAB1.
Draft outline details
Step by step
- Export pipeline and review data for one FulfillCo team for the last quarter.
- Split lead time into stages: coding, waiting for review, review, build and test, wait for release.
- Find the largest stage; check whether it is the same for all four teams.
- Planned mistake: use the mean and miss that a few very old changes distort it. Fix: look at the median and the 85th percentile, and inspect the outliers.
- Form a hypothesis (for example review queue is idle on Mondays) and design an experiment.
- State what you will measure and when you will check.
Check your understanding
Why look at percentiles for lead time?
Show answer
A few outliers distort the mean and hide the typical case.
Practice
Apply this lesson with the module's lab, exercises and quiz.
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