Webhooks let automation respond in real time instead of checking for changes on a schedule. When a deal closes in HubSpot or a payment succeeds in Stripe, a webhook can trigger the next step immediately, such as creating an invoice or notifying the fulfillment team.
For example, a signed contract in an e-signature tool could send a webhook that starts client onboarding in the project management system. The limit is reliability. Webhooks can arrive twice, out of order or not at all if the receiving system is down, so a dependable integration verifies the sender, handles duplicates and has a way to catch missed events.