What is the primary benefit of an event-driven architecture in MDC3?

• A. Scalability And Responsiveness Through Decoupled Processing
• B. Increased Coupling
• C. Reduced Throughput
• D. Higher Memory Usage

Answer: (A)

Decoupled, event-driven processing minimizes cross-component dependencies. By publishing events and having independent listeners react asynchronously, components can be developed, deployed, and scaled separately. This loose coupling makes it easy to add more workers to handle a surge in events, distribute load, and reduce latency, which together deliver greater scalability and faster responsiveness. The pattern avoids forcing producers to wait on downstream processing and lets the system adapt to changing loads without rewiring components. The other options describe outcomes that don’t align with this approach: increasing coupling contradicts the idea of loose coupling, and reduced throughput or higher memory usage are not inherent benefits and can be undesirable tradeoffs.