Webhooks have become a standard in web development, allowing systems to communicate with each other while remaining agnostic to the underlying tech stacks or networks. They serve as a vendor-agnostic approach to passing messages between applications over HTTP, making them useful for distributed and globally distributed applications. A typical webhook consists of a URL, headers, and payload, which can be validated and verified through various methods such as HTTPS, IP address filtering, authentication, and payload verification. Webhook security is crucial to prevent spoofing and phishing attacks, and providers offer different validation mechanisms, including transport layer protection, authentication, and payload verification. When using webhooks in an application, it's essential to use all available options, including HTTPS, IP address filtering, identity validation, and payload verification, to ensure the security of the application.