What is a key characteristic of event-driven architecture?

A key characteristic of event-driven architecture is that it operates based on events that trigger actions or processes across systems. This architecture promotes a decoupled system where components communicate through events, enabling them to react to changes or notifications dynamically. When an event occurs, it signals to other components to initiate specific actions or processes, allowing for a more responsive and adaptable system design.

This approach contrasts with the other options, which lack the fundamental principles of event-driven architecture. For instance, architecture based solely on scheduled time for data processing does not account for real-time event handling and reaction. Requiring manual intervention for each event contradicts the automation and efficiency goals of event-driven systems. Similarly, relying solely on synchronous processes limits scalability and responsiveness, as it would not support the asynchronous communication style that defines event-driven architectures.