A webhook is an HTTP callback: an HTTP POST that occurs when something happens. Webhooks are generally triggered by some sort of event, such as a new user signup, a file being uploaded, etc. When that event occurs, the source site makes an HTTP request to the URL configured for the webhook.
Webhooks can be used to provide external applications with real-time information about events happening on a website or application. For example, a webhook might notify an external application when a new user signs up on a website, or when a file is uploaded to a document library. By using webhooks, applications can stay up-to-date on events happening in other applications without needing to periodically check for new data.
Webhooks are a powerful tool for building integrations between different applications and services. They can be used to connect a wide variety of services and applications, making it possible to automate workflows and build complex integrations.
Webhooks are relatively easy to set up, and they provide a flexible way to receive real-time information