Mapping is something that you see in many frameworks over the web in every programming languages. Doctrine, for example, has a quite complex mapper to transform the relational database representation to your well-known entity.
After covering the history behind years of discussion and research by the Symfony community, we'll study the needs for such a component in Symfony. We'll analyse how different it is from the Symfony Serializer, and what are the solutions popular frameworks on the Web offer. At least, we'll showcase the new Mapper component and its application from API design to day to day use cases.