Principles of CI/CD
🏠The everyday picture
A car factory checks every part as it joins the line, not only the finished car at the end. Small problems are caught when they are small, cheap and easy to fix.
📘What it really is
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Continuous integration (CI): everyone merges small changes often, and every change is automatically built and tested. Problems show up within minutes, close to the change that caused them.
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Continuous delivery (CD): every change that passes CI is packaged and ready to release; releasing is one button.
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Continuous deployment: every passing change goes to production automatically, with no button. Teams get here only after their tests and monitoring are trusted.
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Why it matters:
- small changes are easier to review, test and roll back than big ones;
- automation does the same steps every time; people forget steps, especially when tired or rushed;
- fast feedback: you learn within minutes that something broke, not weeks later;
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a record: every build, test and deploy is logged against a commit.
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The pipeline is a series of gates: code → build → test → package → deploy to staging → check → deploy to production. A change only moves forward if it passes each gate.
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Your site's own test pages already work a little like this: a push to
maingoes live automatically through a webhook. CI/CD adds the checks before the push goes live.
🖱️Try it
Draw your CRM's pipeline as boxes and arrows: what happens from git push to the change reaching production. Mark which
steps are manual today, which could be automated, and where a test should stop a bad change.
✅Quick check
What's the difference between continuous delivery and continuous deployment?
Show the answer
Delivery keeps every passing change ready to release with one action; deployment releases it automatically.
Why do small, frequent changes make releases safer?
Show the answer
Each is easy to review and test, and if one breaks something, it's quick to find and roll back.