This episode explores the often-overlooked yet crucial aspects of Amazon listing optimization using flat files. Against the backdrop of Vanessa Hung's journey from Venezuela to becoming a leading expert in Amazon's backend systems, the discussion highlights the power of flat files for managing large catalogs and improving search ranking. More significantly, Vanessa reveals how flat files provide access to numerous attributes not visible in Seller Central, offering opportunities to enhance listings and protect against competitor manipulation. For instance, she explains how filling out all relevant attributes, even those not directly impacting ranking, safeguards against malicious keyword insertion. As the discussion pivots to the impact of AI, Vanessa notes that Amazon's integration of AI into flat file systems is changing optimization strategies, requiring sellers to carefully consider which attributes to fill and avoid providing misleading information. This means for Amazon sellers that mastering flat files is no longer optional but essential for success in a rapidly evolving marketplace. The interview concludes with practical advice on diagnosing catalog issues and leveraging flat files for tasks like creating variations and preventing listing hijacking.