French and German leaders join forces in strategic partnership to bring flexibility and reliability to the European eCommerce market. After three years of successful collaboration, Shopware, the German-based European leader in open-source eCommerce, and Upsun, the French-based leading European Cloud Application Platform, are announcing a strategic partnership. Building on early success, with already 45 joint customers and growing, Shopware and Upsun are deepening their collaboration in 2026 and beyond.