Continuous Integration Fundamentals

What you will be able to do

• Distinguish integrated revision from ci trigger in a realistic continuous integration fundamentals case.
• Interpret the delivery evidence and boundary associated with automated build.
• Choose an appropriate action involving test feedback without exceeding the named operational scope.
• Verify healthy mainline through an observable service result and reproducible handoff.

01

Frame Continuous Integration Fundamentals

Use continuous integration to turn each small source change into a rapid, repeatable build-and-test result on the shared mainline.

Three developers merge daily, but regressions are found during a weekly manual build. The team needs immediate evidence for every integrated revision.

Keep the delivery target, declared intent, execution evidence, reliability boundary, and recovery choice separate. Start with observable state and preserve enough context for another operator to reproduce the decision.

02

Integrated revision

Continuous integration begins with a small revision integrated into the shared codebase. Within continuous integration fundamentals, this role answers a separate delivery or reliability question and keeps its own evidence.

Trigger verification from the exact commit merged to main. Apply that action to the named service case before widening the rollout, infrastructure scope, or incident response.

Respect this boundary: do not test a different workspace snapshot than the integrated revision. The observable result is specific: the workflow records the commit it evaluates.

03

CI trigger

A CI trigger starts automated work when the relevant repository event occurs. Within continuous integration fundamentals, this role answers a separate delivery or reliability question and keeps its own evidence.

Configure pushes and pull requests to invoke the required checks. Apply that action to the named service case before widening the rollout, infrastructure scope, or incident response.

Respect this boundary: do not rely on a person remembering to start the build. The observable result is specific: each qualifying revision creates one visible workflow run.

04

Automated build

An automated build converts versioned inputs into a consistent deployable artifact. Within continuous integration fundamentals, this role answers a separate delivery or reliability question and keeps its own evidence.

Build with declared tools and dependencies inside the CI environment. Apply that action to the named service case before widening the rollout, infrastructure scope, or incident response.

Respect this boundary: do not use an unrecorded local binary as the release candidate. The observable result is specific: the workflow produces one revision-linked package.

05

Test feedback

Automated tests provide rapid evidence about expected behavior and regressions. Within continuous integration fundamentals, this role answers a separate delivery or reliability question and keeps its own evidence.

Run fast deterministic checks before accepting the integrated result. Apply that action to the named service case before widening the rollout, infrastructure scope, or incident response.

Respect this boundary: do not bury a failing essential test behind later optional work. The observable result is specific: the run exposes a clear pass or failure for the revision.

06

Healthy mainline

A healthy mainline is the shared outcome of frequent integration and prompt repair. Within continuous integration fundamentals, this role answers a separate delivery or reliability question and keeps its own evidence.

Stop new integration work and fix or revert a broken build. Apply that action to the named service case before widening the rollout, infrastructure scope, or incident response.

Respect this boundary: do not normalize persistent red ci as ordinary background noise. The observable result is specific: main returns to a passing deployable state promptly.

07

Apply Continuous Integration Fundamentals to One Service Change

Use one bounded delivery decision: Three developers merge daily, but regressions are found during a weekly manual build. The team needs immediate evidence for every integrated revision.

First, trigger verification from the exact commit merged to main. Then, configure pushes and pull requests to invoke the required checks. Keep both observations attached to the exact revision, environment, or service window.

Next, build with declared tools and dependencies inside the ci environment. After that, run fast deterministic checks before accepting the integrated result. Close the work only after you stop new integration work and fix or revert a broken build.

08

Recap Before Practice and Prove

Integrated revision: Continuous integration begins with a small revision integrated into the shared codebase. In this service case, trigger verification from the exact commit merged to main. Preserve the boundary: do not test a different workspace snapshot than the integrated revision.

CI trigger: A CI trigger starts automated work when the relevant repository event occurs. In this service case, configure pushes and pull requests to invoke the required checks. Preserve the boundary: do not rely on a person remembering to start the build.

Automated build: An automated build converts versioned inputs into a consistent deployable artifact. In this service case, build with declared tools and dependencies inside the ci environment. Preserve the boundary: do not use an unrecorded local binary as the release candidate.

Test feedback: Automated tests provide rapid evidence about expected behavior and regressions. In this service case, run fast deterministic checks before accepting the integrated result. Preserve the boundary: do not bury a failing essential test behind later optional work.

Healthy mainline: A healthy mainline is the shared outcome of frequent integration and prompt repair. In this service case, stop new integration work and fix or revert a broken build. Preserve the boundary: do not normalize persistent red ci as ordinary background noise.