Case C-66/18: Judgment of the Court (Grand Chamber) of 6 October 2020 — European Commission v Hungary (Failure of a Member State to fulfil obligations — Admissibility — Jurisdiction of the Court — General Agreement on Trade in Services — Article XVI — Market access — Schedule of specific commitments — Requirement of authorisation — Article XX(2) — Article XVII — National treatment — Service provider having its seat in a third country — National legislation of a Member State imposing conditions for the supply of higher education services within its territory — Requirement relating to the conclusion of an international treaty with the State in which the provider has its seat — Requirement relating to the provision of education in the State in which the provider has its seat — Modification of conditions of competition to the benefit of national providers — Justification — Public order — Prevention of deceptive practices — Article 49 TFEU — Freedom of establishment — Directive 2006/123/EC — Services in the internal market — Article 16 — Article 56 TFEU — Freedom to provide services — Existence of a restriction — Justification — Overriding reason in the public interest — Public order — Prevention of deceptive practices — High quality of the education — Charter of Fundamental Rights of the European Union — Article 13 — Academic freedom — Article 14(3) — Freedom to found educational establishments — Article 16 — Freedom to conduct a business — Article 52(1))