Articles 4 and 28 of Directive 95/46 must be interpreted as meaning that, where an undertaking established outside the European Union has several establishments in different Member States, the supervisory authority of a Member State is entitled to exercise the powers conferred on it by Article 28(3) of that directive with respect to an establishment of that undertaking situated in the territory of that Member State even if, as a result of the division of tasks within the group, first, that establishment is responsible solely for the sale of advertising space and other marketing activities in the territory of that Member State and, second, exclusive responsibility for collecting and processing personal data belongs, for the entire territory of the European Union, to an establishment situated in another Member State.
Article 4(1)(a) of Directive 95/46 is to be interpreted as meaning that processing of personal data is carried out in the context of the activities of an establishment of the controller on the territory of a Member State, within the meaning of that provision, when the operator of a search engine sets up in a Member State a branch or subsidiary which is intended to promote and sell advertising space offered by that engine and which orientates its activity towards the inhabitants of that Member State.