Webhooks serve as an event-driven method for real-time information exchange between applications, facilitating seamless integration by triggering POST requests upon predefined events. Unlike API polling, which involves frequent requests and lacks real-time capabilities, webhooks offer push-based communication for immediate data transfer, making them suitable for scenarios requiring prompt data synchronization, such as notifying sales teams of new leads or automating invoice creation. The use of webhooks can lead to cost savings by reducing unnecessary API calls and avoiding rate limits, thereby ensuring reliable and uninterrupted data syncs. Merge offers a unified API solution that simplifies the implementation and management of webhooks, providing tools for testing, monitoring, and maintaining these integrations effectively across various platforms such as HRIS, ATS, and CRM systems. While webhooks provide significant benefits, their implementation depends on specific integration requirements, including security considerations and the need for real-time data transfer.