Serialization is the process of converting complex data, such as querysets and model instances, into native Python datatypes. Converting facilitates the rendering of native data types, such as JSON or XML. DRF supports serialization through serializers classes. The serializers of DRF are similar to Django's Form and ModelForm classes. It provides a serializer class, which helps to control the output of responses. The DRF ModelSerializer classes provide a simple mechanism with which we can create serializers that deal with model instances and querysets. Serializers also do deserialization, that is, serializers allow parsed data that needs to be converted back into complex types. Please note that the deserialization happens only after validating the incoming data.