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In plain language
A webhook is a signal sent automatically when an event happens, such as a new request, payment, upload or form submission. Instead of repeatedly asking whether something changed, another system is notified the moment it does.
Technology - 5 min
What is a webhook?
A webhook is an automatic message from one system to another as soon as something happens. It allows processes to start immediately without constantly checking whether new information is available.
5 sections Practical explanation For teams and organizations
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How is it different from an API?
With an API, you typically request information actively. A webhook does the reverse: a system tells you something happened on its own. In many integrations, both are used together: a webhook triggers the process and an API handles the follow-up work.
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What is usually included?
A webhook often contains an event type, a timestamp, a record ID or a reference to more data. Sometimes that is enough by itself, and sometimes the receiving system must use an API call to fetch the full details.
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Where are the pitfalls?
A webhook needs to arrive reliably and be processed securely. That means paying attention to verification, retries, logging and what happens when the receiving system is temporarily unavailable. Without that, a simple integration can become surprisingly fragile.
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Why is it useful?
Webhooks make processes faster and more efficient. They are useful for notifications, workflow triggers, document processing and any situation where immediate follow-up matters. In well-designed systems, they reduce delay and avoid unnecessary polling traffic.
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What is an LLM?
An LLM is a large language model that can understand, predict and generate text. It often feels smart, but the quality of the result still depends heavily on context, model choice and how you use it.
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What is RAG?
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