API vs Webhook
An API is a two-way conversation you initiate whenever you need data, a webhook is the opposite, a message the other system sends to you automatically the moment something happens. Both move data between systems, but the trigger comes from a different side.
API
A set of rules that allows different software applications to talk to each other and share data.
Webhook
An automated message sent from one system to another when a specific event happens, acting like an instant notification.
| Who initiates the request | You, whenever you need something | The other system, the moment an event occurs |
|---|---|---|
| Timing | On demand, whenever called | Real time, as soon as the event happens |
| Typical use | Pulling data or triggering an action | Getting notified instantly (a payment succeeded, a form was submitted) |