AI Commerce Search on Gemini Enterprise for Customer Experience addresses both requirements: helping shoppers discover products through natural-language searches and delivering personalized recommendations that can increase conversions. It is purpose-built for commerce experiences and can interpret user intent, improve result relevance, and support individualized product discovery across large catalogs. Recommendations alone addresses personalization but does not fully solve the natural-language product-search requirement. Vision API can identify and label image content, but image tagging by itself does not provide a complete commerce-search and recommendation experience. Agent Search on Gemini Enterprise Agent Platform is intended primarily for enterprise employees searching internal organizational information, not customers navigating a retail catalog. Because option C combines intelligent product search, personalized recommendations, and improved discovery within a commerce-focused offering, it is the most comprehensive solution.