Zalando Co-CEO: Building Europe's Fashion Giant, AI in Retail and the European Dream

What It Covers

Robert Gentz, co-founder and co-CEO of Zalando, traces the company's growth from selling 20 flip flops daily in 2008 to serving 60 million customers across 25 European markets, covering AI-driven retail innovation, logistics infrastructure, returns reduction, and the case for building technology companies within Europe.

Key Questions Answered

• •Flywheel Sequencing: Build selection depth before breadth — Zalando started with hyper-specific shoe searches (e.g., Adidas Samba size 46) before expanding to full brands, then categories, then geographies. This sequencing allowed traffic conversion to compound naturally, scaling revenue from €5 million in 2009 to over €1.2 billion by year four.
• •B2B Infrastructure Monetization: Once logistics infrastructure reaches scale, productize it for third parties. Zalando now offers its European fulfillment network to 7,000 brands — including Next — enabling them to run their own ecommerce and connect to multiple marketplaces from a single inventory system, eliminating the need for brands to build their own CapEx-heavy logistics.
• •AI-Driven Size Prediction: Zalando's app allows customers to photograph themselves, generating body measurements that, combined with merchandise measurement data, predict correct sizing. Millions of customers already use this feature. The near-term goal is eliminating manual size selection entirely for portions of the catalog, with close to 100% fit confidence.
• •Returns Reduction via 3D Rendering: A primary driver of returns is the gap between product expectation and reality. Zalando converts 2D product images into 3D renders and video to close this gap. Separately, products tagged with sustainability labels show measurably lower return rates, creating a simultaneous win for brands, consumers, and environmental impact.
• •Frugality as Founder Culture: Gentz describes spending half a day debating whether to spend €60 on a market research book during the 2008 financial crisis. He credits this resource scarcity with instilling a capital discipline that persists across the now 15,000-person organization — treating every euro as personal money remains a codified cultural principle used in hiring and promotion decisions.