Without Data, you're just another Person with Opinions
summary
Shows how to stop arguing with anecdotes by correlating real metrics across dev, QA and ops: measure environment checkouts (10 expensive test labs → provision 12 and enable auto-checkin) and saved 20% of environment cost, add an issue type to count flaky test incidents and tracked ~80 environment‑stability issues until they flattened, compare JVM GC traces in production‑like tests to prove a new GC removes pause spikes and reduces instance size, and tie GitHub/Jenkins/Artifactory/Xray data into Mission Control style integrated dashboards to surface actionable signals like average build promotions.
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chapters (14)
- 0:00Intro
- 0:31Special landing page
- 1:47Poll
- 4:54Consequences
- 11:41Metrics
- 18:23Metrics influence each other
- 24:26Sampling
- 27:36Measuring Improvement
- 28:36Building Trust
- 30:15Real World Example
- 32:51Data Examples
- 36:23Dos and Donts
- 39:07Vocabulary
- 41:49Data Interpretation
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