During which phase should the group of user stories be created under the same promotion?

During the Deployment Preparation phase, user stories are grouped under the same promotion, which focuses on organizing and finalizing the changes that are ready to be deployed. This phase involves ensuring that all user stories that will be promoted to the next stage (like production) are clearly defined and prepared, allowing for a smoother deployment process.

Groupings of user stories at this stage help streamline the deployment, making it easier for teams to manage related changes and ensure that all necessary components are included and tested together. This is essential for maintaining consistency and ensuring that all related features are operational upon deployment. The Deployment Preparation phase is critical for aligning the goals of the development team with the deployment strategy, ensuring readiness for the upcoming release.

The other phases mentioned might focus on different aspects of project management and deployment processes. For example, Release Planning is primarily concerned with strategy and timelines, Quality Assurance focuses on testing and validation of user stories, and Deployment Execution is about the actual implementation of the deployment plan. While these are all important phases in the software development lifecycle, they do not specifically emphasize the grouping of user stories under a single promotion like the Deployment Preparation phase does.