Event-driven architecture is a unique model that enhances application design by focusing on real-time event processing, offering flexibility, scalability, and improved user experiences. It consists of loosely-coupled components, including event producers, message brokers, and event consumers, which enable easy integration and expansion without modifying existing structures. This architecture is particularly beneficial for modern, distributed, and IoT applications due to its responsiveness and adaptability. The combination of event-driven architecture with serverless computing is gaining traction because it simplifies application management, reduces IT costs, and optimizes cloud resources, allowing developers to concentrate on enhancing application performance. Koyeb is a serverless platform that supports this architecture by providing a developer-friendly environment to deploy event-driven functions and web services with ease, enabling businesses to achieve scalability and responsiveness without incurring high infrastructure costs.