New Relic has introduced a Webhooks feature that allows customers to receive real-time notifications about important events in their applications through HTTP POST messages. These messages can be used to extend New Relic's functionality, such as forwarding alerts to an internal server or creating custom alerting workflows. The Webhook feature sends JSON documents with relevant information, including event descriptions and links back to New Relic, when an alert threshold is crossed or a deployment occurs. To set up the Webhooks feature, customers can enter their URL in the Alert integrations page, test it using RequestBin, and use sample code in Ruby or other languages to parse the JSON documents and save them to a database. The Webhooks feature aims to provide more flexibility and customization options for New Relic users.