A standard business process model and notation (BPMN) is a graphical representation of the business processes and workflows in a solution. It helps to communicate the logic, flow, and interactions of the activities and actors involved in the solution. By using a standard BPMN, the solution architect can ensure that the solution design is consistent, clear, and understandable across different process diagrams, regardless of the level of detail or complexity. A standard BPMN also facilitates the alignment and integration of the solution with other systems and platforms, as well as the validation and verification of the solution requirements and functionality. References: UiPath Automation Solution Architect Learning Plan, Module 4: High-Level Solution Design1; UiPath Automation Suite - Deployment Architecture2; UiPath Academy - Roles of a Solution Architect in Automation, RPA Setting3.