Third party

Definition in the Law art. 4

a natural or legal person, public authority, agency or body other than the data subject, controller, processor and persons who, under the direct authority of the controller or processor, are authorised to process personal data;

In plain words

A third party is a person or body other than the data subject, the controller, the processor and those who are authorised to process data under their direct authority. A business partner that receives customers’ data for its own purposes, not on the company’s behalf or under its direct authority, is a third party.