Lesson 1
Feedback economics
The earlier a defect is detected, the cheaper it is to diagnose, but not every test belongs in every pipeline stage.
All learning tracks
CI/CD, Observability & Release EngineeringPractical 75 min
CI/CD Quality Gates
Design fast feedback and meaningful release gates without turning pipelines into slow, noisy blockers.
CI/CDPipelinesRisk
Learning outcomes
Layer tests by feedback speed
Design meaningful gates
Separate blocking vs informational signals
Guided lessons
Learn the engineering thinking
Lesson 2
Test pyramid in practice
Balance unit, service, integration and UI checks based on risk rather than chasing a fixed percentage.
Lesson 3
Blocking quality gates
Block only on signals reliable enough to justify stopping delivery.
Lesson 4
Quarantine and known instability
Unreliable tests should be visible and owned, not silently removed or allowed to poison confidence.
Lesson 5
Release evidence
Combine test results, change risk, defects and operational readiness rather than reducing release decisions to one green tick.
Hands-on practice
Do something with what you learned
Do not just tick these mentally. Write the query, create the test matrix, refactor the code, or document the decision. Practical evidence is the point.