Which Event Delivery Model Scales: Polling, Webhooks, or Virtual Webhooks?

As products expand, the choice of event delivery model—polling, native webhooks, or virtual webhooks—becomes a critical infrastructure decision rather than a mere implementation detail. Polling, while easy to implement initially, struggles to scale due to its fragility, inefficiency, and operational overhead, especially when handling large volumes or real-time data. Native webhooks offer a cleaner architecture by allowing the source system to push events directly to applications, but they are limited by inconsistent coverage and varying payload formats across APIs. Virtual webhooks address the limitations of both polling and native webhooks by centralizing polling efforts, standardizing event delivery, and reducing operational burden, making them suitable for scaling across many integrations and real-time use cases. Ultimately, the decision on which model to use hinges on the specific failure modes a product team is prepared to manage as their product grows.

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