Izzy Rosenzweig is the founder and CEO of Portless, the modern e-commerce supply chain, where he covers cross-border fulfillment, tariffs, and the regulatory shifts reshaping global commerce. A 10-year direct-to-consumer veteran, Rosenzweig launched his first company, Browze, in 2012, shipping millions of home and kitchen products to customers around the world. After building a direct fulfillment supply chain to improve the customer experience, he saw a way to help other brands bypass legacy U.S. warehouses. That insight became Portless. Today, the company helps brands cut inventory lead times from months to days and improve cash flow, changing how modern operators manage logistics. Rosenzweig's hands-on experience in agile supply chains, cross-border fulfillment, and customs compliance gives him a distinct lens on how e-commerce brands survive regulatory change and grow under pressure. Follow Rosenzweig for ongoing coverage of tariffs, cross-border fulfillment, and building resilient global supply chains.