Converter Object and DCO are synonyms (in Spring Boot where they refer to the same thing)
● DCO stands for Data Conversion Object
Converter Class has methods for converting between Command and Entity Objects.
Spring Boot will instantiate single instance of this Class for us to use.
So when backend wants to send some data to the front end it will use Converter to convert Entity (with 100 Properties)
into Command Object (with 10 Properties) which will then be sent to the front end to display it.
If your Entity Object is small enough and if it doesn't contain any sensitive data, it can be sent directly to the front-end.
In that case you wouldn't need neither Converter (DCO) nor Command (DTO).