Which feature allows managing CI/CD jobs on code changes in GitLab?

The feature that effectively manages CI/CD jobs on code changes in GitLab is the capability of In-Merge Request Pipelines. This feature ensures that when a merge request is created or updated, it triggers a pipeline to run automatically. This allows teams to validate the proposed changes and ensure they meet specified quality criteria before they are merged into the main codebase.

By utilizing In-Merge Request Pipelines, developers can quickly receive feedback on the impact of their changes, perform automated testing, and check for any issues in a controlled manner. This streamlines the continuous integration process, making sure that only those changes that pass the required tests are merged, ultimately improving the reliability of the code being deployed.

In contrast, Continuous Integration Events generally refer to the overall concept and process of integrating code changes often, but do not specifically denote the management of the job execution at the point of a merge request. Deployment Management focuses on the strategy and tools for deploying applications, rather than the management of jobs related to code changes. Branch Policies, while crucial for maintaining code quality by enforcing rules on branches, do not directly manage CI/CD job execution on changes, but rather govern how changes can occur. Thus, the designation of managing CI/CD jobs on code changes aligns most clearly with