Webhooks are automated messages sent from an application after certain operations to facilitate communication between services, such as notifying an e-commerce application after a payment operation. The text explains how Convoy can be leveraged to send webhook events reliably from an application to clients, using a tutorial on building a Todo API with Express. The API project involves creating, updating, and deleting Todo items, each triggering webhook events for those operations. It outlines setting up endpoints and Todo APIs, the process for creating and managing endpoints, and how to send webhook events using Convoy. The tutorial demonstrates how to publish webhook events via a series of API operations, including creating and updating Todo items, and emphasizes best practices for managing endpoints and event publishing in a production environment. Convoy's functionality allows sending webhooks to single or multiple endpoints, and the guide encourages users to experiment with the setup and provide feedback.