back office
as defined in Directive (EU) 2019/520 of the European Parliament and of the Council of…, Article 2, point (18) (Definitions)
(18)
‘back office’ means the central electronic system used by the toll charger, a group of toll chargers who have created an interoperability hub, or by the EETS provider to collect, process and send information in the framework of an electronic road toll system;