Why We Switched from Microservices to a Modular Monolith

The Microservices Tax

For years, the industry pushed microservices as the "only way to scale." However, many teams found themselves paying a "network tax": dealing with eventual consistency, distributed tracing, and the nightmare of managing 50 different Dockerfiles for a 5-person team.

The Modular Monolith Solution

A modular monolith keeps a single deployment unit but enforces strict boundaries between domains at the code level. If you can't build a clean monolith, you'll never build a clean microservice system. We regained type-safety across the entire stack and reduced our infrastructure costs by 60%.