Jenkinsfile
A Jenkinsfile is a text file that defines a Jenkins pipeline as code, typically written in Groovy syntax. It allows developers to specify the entire build, test, and deployment process in a version-controlled script, enabling automation and reproducibility of CI/CD workflows. This approach supports both declarative and scripted pipeline syntax, making it flexible for various project needs.
Developers should use Jenkinsfile when implementing continuous integration and continuous deployment (CI/CD) pipelines in Jenkins, as it provides a code-based, maintainable way to define complex workflows. It is particularly useful for teams requiring automated testing, deployment to multiple environments, or integration with version control systems like Git, ensuring consistency and reducing manual configuration errors.