What is the purpose of creating a promotion branch?

Creating a promotion branch serves several key purposes, one of which is to ensure that changes are not overwritten in the destination environments. This is critical in a collaborative development environment where multiple changes may be occurring simultaneously across various branches. By utilizing a promotion branch, you create a stable, isolated environment that captures a specific set of changes before they are integrated into a production or higher-level environment. This prevents the risk of losing important updates or integrating conflicting changes that could disrupt the deployment process.

While options such as consolidating user stories or simplifying the promotion process are relevant concepts, they do not encapsulate the primary objective of a promotion branch as effectively as the focus on protecting changes made to the destination environment. Therefore, the ability to safeguard against unintended overwrites in environments is a fundamental aspect of the promotion branch's design.