Microservices have become the default architecture for new systems at many companies. The benefits are real: smaller blast radius, independent deploys, focused ownership. The costs are also real, and they are usually invisible at the proposal stage.
Network Latency Adds Up
Every call that used to be a function invocation is now a round trip. Latency budgets get spent fast when a single user request fans out across ten services.
Operational Complexity
Each service needs CI, monitoring, on-call rotation, and a deployment pipeline. Multiply by N services and the platform team is suddenly busy.
Data Consistency Is Harder
Distributed transactions are difficult. Eventual consistency works but raises questions that did not exist in your old monolith.
The Right Question
Do not ask if microservices are good. Ask whether your team has the platform maturity to pay their tax. If not, a well-modularized monolith is the wiser choice.
Conclusion
Microservices are a tool, not a destination. Reach for them when their cost is lower than the cost of staying together.