Which of these is stored in memory related to process?

In the context of Appian processes, process variables are the elements that hold dynamic data and state throughout the lifecycle of a process instance. These variables are typically stored in memory while the process is active, allowing for quick access and manipulation as the process progresses through various steps and tasks.

Process variables can be used to store user inputs, interim calculations, or any other information that needs to be accessed or modified during the execution of a process. This in-memory storage is crucial for maintaining the efficiency and responsiveness of the process as it operates in real-time.

On the other hand, task history, process history, and task properties represent either historical data or metadata that is not necessarily held in memory while the process runs. These components are essential for auditing and reporting purposes but are categorized differently when considering what is temporarily stored during the active execution of a process. This distinction is key in understanding the operational architecture of Appian and how data flows through process instances.