The collection merchandiser app uses advanced data analytics and past order data to create, manage and sort collections with advanced merchandising strategies. It supports visual and rule-based sorting to streamline collection management and reduce manual work. Rules can be based on Revenue, Profit, Tags, Sizes, Metafields, Vendor, Product Age, or GA4 data like Views, Add to Carts, and Cart-to-View ratio. Features like product demotion, shuffle, and stack sorting further optimize collections.