When is it not necessary to use a microservices architecture? Give a couple of reasons.

Microservice architecture is not always justified. Here are some reasons when it is better not to use it:

• Small or simple project. If the application is small and uncomplicated, microservices will add unnecessary complexity and overhead.

• Lack of an experienced team. Microservices require good skills in DevOps, CI/CD, monitoring, and managing distributed systems.

• High performance and low latency requirements. Calls between services over the network can add delays, which is critical for some applications.

• Limited resources for support. Microservices require more effort for maintenance, deployment, and monitoring.

In such cases, it is better to use a monolith or a simpler architecture.