Pulumi ESC Webhooks is a new feature designed to enhance the management of secrets and configurations by automating workflows and providing real-time notifications, thereby simplifying infrastructure and application updates. It allows development teams to send custom triggers to any URL endpoint and integrates seamlessly with platforms like Slack and Microsoft Teams, enabling real-time notifications and automated actions based on specific events in Pulumi ESC environments. This tool supports hierarchical configurations, ensuring that changes in imported environments trigger the necessary responses, and provides integration options through the Pulumi Cloud Console, Service Provider, and REST API. Pulumi ESC Webhooks aim to improve visibility, streamline workflows, and facilitate automation without the need for custom code, supporting CI/CD pipeline integration and enhancing collaboration among developers, operations teams, and security personnel.