Decision management services

Each service is responsible for a specific functional area of decision management:

Decision Data Store

The Decision Data Store (DDS) service manages the Cassandra cluster and stores decision management data in a Cassandra database.

Adaptive Decision Manager

The Adaptive Decision Manager (ADM) creates and updates adaptive models by processing customer responses in real time. By including adaptive models in your next-best-actions strategies, you can make better decisions for your business based on accurately predicted customer behavior.

Data Flow

The Data Flow service enables running data flows in batch and real time (stream) modes. Data flows are data pipelines that read, transform, and write data. With data flows, you can, for example, run decisions, perform text analysis, and execute real-time aggregations.

Real Time Data Grid

The Real Time Data Grid (RTDG) service performs historical analysis and forecasting for your next-best-action strategies. With the RTDG service, you can monitor the results of your next-best-action decisions in real time.

Stream

The Stream service enables asynchronous flow of data between processes in Pega Platform. The Stream service is a multinode component that is based on Apache Kafka.

Node types specific to decision management

Pega Platform provides a set of node types that are specific to decision management so that you can start each decision management service and then scale it according to your needs.

To start a decision management service, you assign a node type specific to that service to an existing node; for example, to start the Decision Data Store (DDS) service, you assign the DDS node type to a selected node. You can assign a decision management service node type to any Pega Platform node.

After starting a decision management service, you can scale that service horizontally by assigning the corresponding node type to more nodes. The number of nodes for each service depends on your application resiliency and scalability requirements. To ensure the scalability of each service, assign only one node type to a node.