Both programs can be implemented at the same time, delivering different experiences to the customers.
Brand Showcase is mainly HP visual marketing content integrated onto the partners website, it does not depend on the partners products or catalog. Brand Showcase content does include information on products and services at a high level but doesn’t offer detailed SKU-level content.
As for Product experience depends on the partners own inventory and products availability, providing solutions like Rich Inline Content + Cross and Upsell tools. It offers detailed SKU-Level content.