Your storefront encounters the Product entity when fetching catalog data: category listings, search results, and product detail pages. A Product holds general information about a buyable good or service. It is not buyable by itself; instead, each Product links to one or more ProductVariant entities that represent the actual purchasable SKUs.
Category multi - All categories the product is assigned to.BreadcrumbItem multi - Breadcrumb items for the product detail page.Review multi - User-generated product reviews.ProductVariant multi - The actual buyable SKUs. A Product must always link to at least one ProductVariant.