Webhooks are messages sent from applications after operations are executed, facilitating communication between services, such as a payment provider and an e-commerce platform. Convoy acts as a reliable egress for publishing webhook events from applications to clients. The article showcases building a Todo API in Rails using Convoy to publish webhook events for create, update, and delete operations on Todo items. It outlines necessary prerequisites, including a Convoy Cloud account and an API key, and provides a detailed setup of API endpoints for managing Todo items and endpoints. The API generates events like todo.created, todo.updated, and todo.deleted, which are published using Convoy. The article explains how to publish webhooks using the Rails application and suggests best practices for production environments, such as scoping endpoints to user-specific data and publishing webhooks from workers. Convoy offers the flexibility to send webhooks to single or multiple endpoints, and the article encourages trying out the implementation and providing feedback.