The Real Truth About Event-Driven Architecture

Event-Driven Architecture (EDA) isn’t a magic bullet—while it can help you decouple services at runtime (temporal coupling), it doesn’t erase design-time dependencies. You still need solid boundaries and clear workflows, because otherwise you’re just shifting bottlenecks around. Complex, cross-service workflows can quickly become a big design smell rather than a scalable solution.

And yes, scalability is great until you hit event ordering and consistency issues—solving one problem often spawns another. The key is to embrace sensible boundaries, understand where ordering really matters, and avoid over-engineering your system in the pursuit of “ultimate” loose coupling.

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