A real-world introduction to event-driven architecture

An event indicates a state change and is used to signal interested parties that something has happened. Event-driven architecture (EDA) raises and responds to events, with an event producer triggering events and these reaching interested consumers via an event channel. The benefits of EDA include eliminating the need for a consumer to poll for updates, decoupling components for scalability, and providing realtime digital interaction capabilities. However, building a realtime event-driven architecture can be complex, costly, and time-consuming due to technical debt, performance concerns, data integrity issues, reliability challenges, and scalability limitations. To achieve best results, developers can use platforms like Ably that simplify the process of delivering feature-rich realtime digital experiences at scale with a unified platform for building powerful realtime applications.