How are rules organized in Pega?

In Pega, rules are organized by application layers, which provides a structured framework for managing and categorizing different types of rules based on their purpose and functionality within an application. The layered approach consists of the following primary layers:

1. Framework Layer: This is the foundational layer where common rules applicable to multiple applications are defined. It serves as a reusable base for building applications.

2. Implementation Layer: This layer contains application-specific rules that build upon the framework layer rules. Each implementation layer caters to a specific business application or a set of related applications.

3. Top Layer: This is the layer where customization and specific configurations take place, allowing for application instances to be tailored to meet unique business requirements.

Organizing rules by application layers facilitates a clear hierarchy and fosters reusability, ensuring that changes made in the framework layer automatically propagate to lower layers, thus maintaining consistency and reducing redundancy. This structure not only simplifies rule management but also enhances the maintainability of the application over time.

While user roles, case types, and data sources play significant roles in Pega applications, they do not represent the fundamental organization of rules within the platform. Instead, they serve as functional categorizations within the context of the application,