At present we are Exposing database entities to the client, but that is not always a good idea. Sometimes you want to change the shape of the data that you send to client. For example, you might want to: - Remove circular references (see previous section). - Hide particular properties that clients are not supposed to view. - Omit some properties in order to reduce payload size. - Flatten object graphs that contain nested objects, to make them more convenient for clients. - Avoid "over-posting" vulnerabilities. (See Model Validation for a discussion of over-posting.) - Decouple your service layer from your database layer. DTO will help us to resolve all the above issues. In this video we will understand it in details. . You can support me by donating on https://www.buymeacoffee.com/studymash Thanks Studymash