Parallel Sub-Workflow Execution with Webhook Coordination

This n8n workflow enables the parallel execution of multiple sub-workflows and coordinates their completion using webhooks. It starts with a manual trigger to simulate multiple items, then initiates separate sub-workflows via webhooks, each reporting back when finished. The main workflow waits for all sub-workflows to complete by tracking their responses through webhook callbacks. Once all sub-workflows have reported completion, the main process proceeds. This setup is useful for managing concurrent processes, such as batch data processing, distributed task execution, or parallel API calls, where synchronization on task completion is required.