The ability of independent online systems to communicate with one another and share data is the core of what makes online services valuable today. In this post, will look at webhooks.
A webhook is one of the many ways to facilitate communication between online services and by the end of this post, you will fully understand what webhooks are, how they work, and when to use them.
A webhook is an HTTP request, triggered by an event in a source system and sent to a destination system, often with a payload of data. Webhooks are automated, in other words, they are automatically sent out when their event is fired in the source system.
This provides a way for one system (the source) to “speak” (HTTP request) to another system (the destination) when an event occurs, and share information (request payload) about the event that occurred.
Based on the definition above, I am sure you’re already getting an idea of what webhooks are used for. Simply put, webhooks are used to communicate the occurrence of an event in one system to another system, and they often share data about the event.
To receive webhook requests, you have to register for one or more of the events (also known as topics) for which the platform offers a webhook. A webhook request will be sent to a destination endpoint on your application so you need to build one for it and register the URL as the *Webhook URL* for that event.
Once the webhook registration for an event is complete with the endpoint added, you will receive webhook requests at the destination URL you provided each time the event occurs.
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