Case C-815/21 P: Judgment of the Court (Seventh Chamber) of 20 April 2023 — Amazon.com Inc., Amazon Services Europe Sàrl, Amazon EU Sàrl, Amazon Europe Core Sàrl v European Commission (Appeal — Competition — Article 102 TFEU — Abuse of dominant position — Online sales — Regulation (EC) No 773/2004 — Article 2(1) — European Commission decision to initiate an investigation — Territorial scope of the investigation — Exclusion of Italy — Allocation of competence between the Commission and the competition authorities of the Member States — Regulation (EC) No 1/2003 — Article 11(6) — The competition authorities of the Member States being relieved of their competence — Protection against proceedings conducted in parallel by the competition authorities of the Member States and by the Commission — Action for annulment — Act not open to challenge — Act not producing legal effects vis-à-vis third parties — Preparatory act — Inadmissibility)