Virtual Webhooks vs Polling Jobs: How Unified API Platforms Handle Change Detection

Unified API platforms present three primary models for change detection: native webhooks, virtual webhooks, and sync-based notifications, each offering distinct architectures and implications for latency and system complexity. Native webhooks provide real-time updates by pushing events directly from the source system, but their coverage is often limited across SaaS APIs. Virtual webhooks appear as traditional webhooks to the end user but rely on the platform to poll the source API, detecting changes and emitting events based on configurable intervals, which can range from minutes to hours. Sync-based notifications, often misleadingly labeled as webhooks, use batch processing to notify applications of changes post-sync, necessitating additional API calls for data retrieval, which impacts real-time functionality. The choice between these models influences how data is stored, how quickly it can be accessed, and whether additional steps are required to process events. The underlying method of event generation, latency, and the inclusion of actual data in webhook events are critical factors determining the efficiency and architecture of applications built on these platforms.