In a Continuous Integration (CI) pipeline, what is a key benefit of using automated builds?

Automated builds are a core component of Continuous Integration (CI) that ensures every build is executed in a standardized and repeatable manner. By using a version-controlled script, the process of compiling source code, linking dependencies, and packaging the application is performed identically every time it is triggered. This eliminates inconsistencies and errors that arise from manual builds, where different developers might use slightly different environments, tool versions, or procedures. The primary benefit is this consistency, which creates a reliable foundation for subsequent testing and deployment stages, ensuring that any detected failures are due to code changes, not variations in the build process itself.

A. Automated builds often require dedicated infrastructure (build agents/servers), which can increase, not necessarily minimize, overall server costs, especially with high build frequency.

B. Automation helps detect compilation and test errors early, but it does not eliminate the possibility of developers writing flawed code in the first place.

D. Code redundancy is a code quality concern addressed by practices like code reviews and static analysis, not by the automated build process which simply compiles the existing code.

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1. Humble

J.

& Farley

D. (2010). Continuous Delivery: Reliable Software Releases through Build

Test

and Deployment Automation. Addison-Wesley Professional.

Reference: Chapter 5

"Anatomy of the Build and Deployment Pipeline

" Section "The Commit Stage." The authors state

"The goal of the commit stage is to... provide fast feedback on any change. The first part of this is to ensure that the system builds and packages correctly... The build should be triggered by every check-in... This process must be automated." The chapter emphasizes that automation is key to creating a repeatable and reliable process.

2. University of California

Berkeley. (2015). CS 169: Software Engineering

Lecture 18: Continuous Deployment.

Reference: Slide 18

"Continuous Integration." The lecture notes describe a key benefit of CI as creating a "Repeatable

reliable process for deploying software." This directly supports the concept of consistency through automation. Available via Berkeley course archives.

3. GitLab Inc. (2023). Official GitLab Documentation: Continuous Integration.

Reference: Section "How CI works." The documentation states

"CI works by pushing small code chunks to your application’s code base hosted in a Git repository

and each push triggers a pipeline of scripts to build

test

and validate the code changes before merging them into the main branch... This practice provides you with a consistent and automated way to build

package

and test your applications." This explicitly identifies consistency as a primary outcome of automated CI processes.