Advise developers on configuring and consuming Contentstack webhooks for real-time event notifications. Cover event channels, payload structure, signature verification, retry behavior, release-triggered webhook storms, and reliable receiver design. Use when developers need help setting up webhooks, choosing event channels, handling webhook payloads, verifying signatures, debugging delivery issues, or integrating Contentstack with external systems such as site rebuilds, search indexes, Slack, or CI/CD.