# Webhooks

Webhook allows you to receive notifications when specific events occur, such as changes to a merchant account or application submission. Instead of repeatedly polling the API for updates, your endpoint receives HTTP requests instantly making your integration more efficient, scalable, and responsive.

For more information on webhooks, refer to the following articles:

* [Prerequisites](/api-reference/webhooks/prerequisites.md)
* [Register Endpoint](/api-reference/webhooks/register-url.md)
* [Webhook Subscriptions](/api-reference/webhooks/webhook-subscriptions.md)
* [Working with Webhooks](/api-reference/webhooks/working-with-webhooks.md)
  * [Transaction Webhook](/api-reference/webhooks/working-with-webhooks/transaction-webhooks.md)
  * [Onboarding Webhooks](/api-reference/webhooks/working-with-webhooks/merchant-onboarding-webhooks.md)
  * [Equipment Tracking & Activation Webhooks](/api-reference/webhooks/working-with-webhooks/equipment-tracking-and-activation-webhooks.md)


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