CI/CD inputs: Secure and preferred method to pass parameters to a pipeline

GitLab's CI/CD inputs offer a modern solution to the challenges posed by traditional variable-based parameter passing in pipelines, providing a more reliable, secure, and maintainable method for handling parameters. Unlike variables, which lack type validation and can be modified at runtime leading to unpredictable behavior, inputs enforce type safety and immutability, ensuring consistent pipeline execution. This new approach eliminates common issues such as variable collisions and security risks by creating clear contracts that define expected values and their types. Inputs also enhance pipeline configuration flexibility, allowing for dynamic interpolation and unique naming to prevent job name collisions. With features like expand_vars for proper variable expansion and the ability to seamlessly integrate with existing variable-based workflows, inputs enable a gradual transition while maintaining backward compatibility. The shift to inputs not only improves error detection and automation reliability but also lays the groundwork for leveraging GitLab's CI/CD Catalog, facilitating the use of reusable components with typed interfaces. As GitLab continues to expand inputs functionality, teams can expect further enhancements in pipeline customization and job-level parameter management, ultimately leading to more efficient and predictable CI/CD processes.

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