Boulogne-Billancourt, FRANCE, 2016-Apr-06 — /EPR Retail News/ — Carrefour will be one of the partners of the 1st Start-Up Summit organised by Challenges, scheduled for 6 April at the Palais Brongniart. Hervé Parizot, Carrefour France's head of e-commerce and client data, will be talking as part of a roundtable discussion on the theme: Big can be smart…