What is the main difference between start processes and subprocesses?

The distinction between start processes and subprocesses primarily revolves around their roles in workflow management and resource utilization. Start processes are designed to initiate a new process instance. They provide a beginning point for workflows that may require their own data flow and can be triggered based on specific events, including user interactions or external applications. One of their key advantages is that they can operate independently, allowing for better memory management and performance optimization in a broader Appian environment.

In contrast, subprocesses serve as components of an existing process. They are called from within a main process instance to execute a specific set of tasks or operations, allowing for reuse of logic without needing to initiate a separate process instance. While they provide structural organization and enhance modularity of processes, they don't inherently offer the same memory and performance advantages as start processes. Each type of process is crucial for different scenarios in Appian application design, helping developers optimize resource use and maintain effective workflows.

This makes the first statement accurate, as start processes typically have memory usage and performance advantages due to their ability to manage their resources independently.