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Guillaume Lebreton is a seasoned professional with rich experience in sales planning and marketing analysis. Currently serving as Sales Planner Manager at Acast since September 2020, Guillaume oversees strategic sales initiatives. Previously, Guillaume held the role of Marketing Analyst at Altice Media Ads & Connect from June 2018 to September 2020, focusing on cross-media consultancy and developing client argumentation strategies. Additionally, as Assistant Chef de Marque at RMC Info Talk Sport earlier in 2018, Guillaume contributed to communication planning and addressed commercial challenges. Educational qualifications include a Master Programme Grande Ecole specializing in Marketing from KEDGE Business School and an MBA in Marketing from Siam University Bangkok.