Why I still reach for Spring Boot in 2026

Every so often someone asks why I keep building new services in Spring Boot instead of something newer. The honest answer is that it gets out of my way faster than anything else I've used.

The ecosystem is the actual product

Spring Boot's biggest advantage isn't the framework itself, it's everything around it. Security, data access, messaging, observability, testing — there's a well-documented, battle-tested way to do almost everything a backend service needs, and it's usually one dependency away.

Convention over configuration still pays off

When I join a new Spring Boot codebase, I already know roughly where the controllers, services, and repositories live. That predictability compounds across a team. New engineers ramp up faster, code reviews go quicker, and there are fewer architectural debates that don't need to happen.

It scales down as well as it scales up

I've used Spring Boot for a single-purpose internal tool with three endpoints and for a payments service handling serious transaction volume. The same mental model applies to both. That's rare, and it's underrated.

Where I'd reach for something else

None of this means Spring Boot is always the right call. For small, latency-critical services I've reached for lighter frameworks, and for pure data pipelines Kafka Streams or Flink often make more sense than shoehorning everything into a request-response model. But as a default for "we need a backend service, and it needs to be correct," it's still my first choice.