Supportsoft Glossary

Event-Driven Architecture for Responsive Applications

An event-driven architecture is a software structure that responds to events consisting of changes or actions noted by an application or system. Rather than executing a set path of actions in order, an event-driven application will wait until something deemed important to the application occurs; when it does, the system will take the appropriate action or perform an operation based on that event being generated. Common examples of events include user interactions (clicks), system-level triggers (sensor readings), or internal updates (changing the value of a database).

The characteristics of event-driven architecture demonstrate a flexible and scalable system. Event producers and consumers operate independently of the rest of the application. Thus, all components can support many simultaneous events without degrading performance. Additionally, due to the decoupled architecture, extending or modifying existing functionality is simplified through the addition of new handlers that can be processed without modifying the core logic of the application.

Event-driven architecture applied to applications requiring immediate or near-immediate responsiveness, such as customer-facing real-time analytics dashboards, eCommerce order processing systems, IoT networks, and messaging platforms, enables those applications to stay responsive and to efficiently process events as they occur. Event-driven architecture also supports cloud-native technologies, which require distributed services to communicate asynchronously to allow for scalability.