Complexity: Managing many small services can be like juggling a lot of balls. It can get complicated to coordinate and keep track of all these services. This complexity can make development and debugging more challenging.

Communication Overhead: In a microservices architecture, services often need to talk to each other over a network. This communication adds overhead and can slow things down compared to a monolithic system where everything is in one place.

Deployment Challenges: Deploying changes to multiple services can be like herding cats. Each service may have its own version, and coordinating updates across all of them can be tricky. It requires careful planning and automation.