What are the three levels of the business process hierarchy?

Business processes are typically organised into a three-level hierarchy to manage complexity and provide a clear line of sight from strategy to execution. The standard levels, moving from the highest to the lowest level of detail, are: Enterprise (or Value Chain): The highest level, showing the core business functions (e.g., "Sell Product," "Develop Product"). Event-Response (or End-to-End): The mid-level, showing the process triggered by a business event and concluding with an outcome (e.g., "Handle Customer Order"). Actor-Task (or Detailed/Procedure): The lowest level, showing the individual steps and actions taken by the actors to complete a process (e.g., "Check stock availability," "Package item"). Therefore, the three key levels that define this breakdown are Enterprise, event-response, actor- task. (Reference: BCS Modelling Business Processes / BCS Business Analysis Practice – Business Process Hierarchy) ===========