In short
Defining infrastructure (servers, networks, databases) in version-controlled configuration files rather than manually clicking through a cloud console — enabling repeatability, review, and rollback for infrastructure changes.
How to learn this
- 1List 3 problems IaC solves compared to manually configuring infrastructure via a console.
- 2Learn the difference between declarative IaC (describe the end state) and imperative (describe the steps).
- 3Understand why 'infrastructure drift' (manual changes outside of code) undermines IaC's value.
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