what is dto

A Data Transfer Object (DTO) is an object used to transfer data between processes in programming. The motivation for using DTOs is to reduce the number of method calls between processes, especially in remote interfaces where each call is expensive. DTOs are simple objects that carry data and do not have any behavior except for storage, retrieval, serialization, and deserialization of their own data. They should not contain any business logic but may contain serialization and deserialization mechanisms for transferring data over the wire. DTOs are often used to transfer parameters to methods and as return types. They are easy to develop and update and are commonly used in object-oriented programming languages such as Python, C++, and Java.