In a scale-out cloud environment like App Service, the nature of initialization changes from a one-time event to a lifecycle that must be managed continuously since A synchronous (inline) initialization is typically experienced by users as cold-start, or a long first request to the app, while an asynchronous initialization will surface errors or nondeterministic behavior during startup. It can be complex and require a long time to complete, creating headaches for users if not properly managed. Initialization is a core concern of any app.
