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Advanced Topic 41 of 50 DevOps & Tooling

Trunk-Based Development

Frequent merges to a single main branch.

How it works

In trunk-based development all developers integrate into one main branch, the trunk, at least daily, using very short-lived branches or committing directly. Large features are broken into small safe steps that are hidden behind feature flags or branch by abstraction until ready. A fast automated test suite and CI on every commit keep the trunk releasable, and releases are cut from the trunk or from short release branches. It contrasts with long-lived feature branches and Git Flow, which delay integration and create large merges. Code review is lightweight and continuous.

Where it is used

High-performing teams use it to reduce merge pain, release frequently and keep everyone working on the current code.

Common pitfall

Without strong tests and CI, a broken trunk blocks everyone, and half-finished work visible to users causes problems. Keep builds fast, fix a broken main immediately and use flags for unfinished features.

Where it fits in the course

Trunk-Based Development is topic 41 of 50 in DevOps & Tooling, rated Advanced. It follows Feature Flags. The next topic is Monorepos.

Practice and explore

How to study this topic

  1. Read the explanation above and restate the definition in your own words.
  2. Open the interactive lesson and answer its mini quiz.
  3. Read the common pitfall, then write a short example that avoids it.
  4. Check your understanding in the DevOps & Tooling quiz, and revisit the topic if you miss a question.

Frequently asked questions

What is Trunk-Based Development?
Frequent merges to a single main branch. It belongs to DevOps & Tooling and is an advanced-level topic.
Where do people use Trunk-Based Development?
High-performing teams use it to reduce merge pain, release frequently and keep everyone working on the current code.
What is the most common mistake with Trunk-Based Development?
Without strong tests and CI, a broken trunk blocks everyone, and half-finished work visible to users causes problems.
What should I learn before this topic?
Start with Feature Flags, the topic just before it in DevOps & Tooling.
How can I practice it?
Answer the mini quiz in the interactive lesson, then take the DevOps & Tooling quiz.
Is Trunk-Based Development hard to learn?
It is an Advanced topic. Expect to read the explanation more than once and to connect it with earlier topics. Working through a small example by hand helps most.
How long does it take to learn Trunk-Based Development?
Most learners can read the explanation and finish the interactive lesson in under an hour. Fluency comes from applying the idea, so plan a few short practice sessions with the quiz.
Which topics are related to Trunk-Based Development?
Feature Flags, Monorepos, GitOps are closely connected. The full list is in the related topics section of this page.
What should I study after Trunk-Based Development?
Continue with Monorepos, the next topic in DevOps & Tooling.

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