In this article, for each country in the world examined, Prof.  Avv.  Alessandro del Ninno provides practical information about the existence or otherwise of the obligation to appoint the DPO (or a similar figure, also otherwise named) based on the local legislation on the protection of personal data.

In the event of the existence of the obligation, the practical information includes specific aspects such as the methods of registering the DPO (or a similar figure, also otherwise named) with the local data protection authority.