Do your services contain a lot of logic, or are they purely 'take from here, put there'?

Our services had quite sophisticated logic; they were not just simple conveyors of "take from here, put there".

It was often necessary to implement:

• Validation and transformation of data before saving.
• Business rules, such as discount calculations, access rights verification.
• Asynchronous task processing and interaction with queues.
• Integration with external APIs with error handling and retries.

This approach makes services more resilient and flexible, as well as reduces the load on the frontend and other system components.