Microservices: you have an old monolith, want to break it into microservices. Why do this?

Breaking down a monolith into microservices is done to improve the system's flexibility, scalability, and manageability.

Main reasons:

• Scalability: you can scale only the parts that experience load, rather than the entire monolith.
• Team autonomy: different teams can work on different services independently, speeding up development.
• Simplified maintenance: smaller services are easier to understand, test, and deploy.
• Technology choices: each microservice can choose the optimal technology stack.
• Resilience: failure of one service does not lead to the collapse of the entire system.

However, this transition requires a well-thought-out architecture, organized communication between services, and data management.