What is the function of reusing rules in a Pega application?

Reusing rules in a Pega application primarily serves to incorporate existing case behavior, which fosters consistency and efficiency within the application. When rules are reused, rather than being recreated or duplicated, developers can leverage pre-existing functionality. This means that the logic and structure defined in these rules can be applied across multiple cases or processes, reducing redundancy and ensuring that any updates made to a reusable rule will automatically propagate to all areas where it is applied.

This approach not only streamlines application development by saving time and resources but also enhances maintainability. If case behavior needs to be modified, changes can be made in one place rather than having to update multiple instances of similar logic scattered throughout the application. Ultimately, reusing rules facilitates the creation of more resilient applications that align with best practices in software development, such as the DRY (Don't Repeat Yourself) principle.