This study was foreseen under the eGovernment Action Plan 2011-2015. Administrative Burden Reduction (ABR) can be achieved through the integration of eGovernment tools; the smart use of the information that citizens and businesses have to provide to public authorities for the completion of administrative procedures; making electronic procedures the dominant channel for delivering eGovernment services; and the principle of the “once only” registration of relevant data. The latter ensures that citizens and businesses supply certain standard information only once, because public administration offices take action to internally share this data, so that no additional burden falls on citizens and businesses.