What are webhooks?

Webhooks are a streamlined method for enabling real-time communication between applications without repeated API calls, primarily involving a webhook provider that sends event notifications and a consumer that receives and processes them. They play a significant role in event-driven systems, allowing for efficient data exchange and triggering actions based on specific events, exemplified by integrations like GitHub-Slack notifications. Webhooks utilize HTTP methods like POST and GET, with POST being more common for sending event data, albeit with potential vulnerabilities like server-side request forgery and replay attacks. Implementing security measures such as input validation, whitelisting, and timestamped signatures can mitigate these risks. Real-world applications extend to enterprise settings using protocols like SCIM for identity management and infrastructure automation in DevOps workflows, highlighting their versatility in synchronizing systems and automating processes.

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