Case C-62/19: Judgment of the Court (Fourth Chamber) of 3 December 2020 (request for a preliminary ruling from the Tribunalul Bucureşti — Romania) — Star Taxi App SRL v Unitatea Administrativ Teritorială Municipiul Bucureşti prin Primar General and Consiliul General al Municipiului Bucureşti (Reference for a preliminary ruling — Article 56 TFEU — Applicability — Purely internal situation — Directive 2000/31/EC — Article 2(a) — Concept of ‘information society services’ — Article 3(2) and (4) — Article 4 — Applicability — Directive 2006/123/EC — Services — Chapters III (Freedom of establishment for providers) and IV (Free movement of services) — Applicability — Articles 9 and 10 — Directive (EU) 2015/1535 — Article 1(1)(e) and (f) — Concept of ‘rule on services’ — Concept of ‘technical regulation’ — Article 5(1) — No prior communication — Enforceability — Activity consisting in putting persons wishing to be transported around the city in touch, by means of a smartphone application, with authorised taxi drivers — Classification — National legislation making that activity subject to a prior authorisation scheme)