The architectural debate between monolithic applications and distributed microservices is often clouded by industry hype. For rapidly growing firms, prematurely splitting a cohesive system into dozens of services introduces network latency, distributed transaction complexity, and heavy operational overhead.
A modular monolith with well-defined domain boundaries frequently offers the optimal balance of developer velocity, straightforward testing, and high performance.
Organizations should only transition specific high-throughput domains into independent microservices when team scale and independent deployment cadences genuinely necessitate service decoupling.