Follow-up on BGContinuedProcessingTask: it looks like a great fit when the user explicitly starts an upload. In our case, the user opts into photo library sync once, and after that we want subsequent app launches to discover new videos since the last sync, transcode them, and upload them automatically. The recurring work is therefore user-authorized, but not tied to a fresh user action each time new content appears. For this kind of ongoing media sync, where the user initiated the workflow once, but future uploads are triggered by newly detected content rather than an explicit upload action: What approach would you recommend?