Which of these is a best practice for setting up a Perfomance Max for omnichannel goals campaign?

Segmenting products by performance and business goals is a best practice because it allows Performance Max to optimize bidding and ad delivery more effectively. By grouping high-performing products or those aligned with specific business objectives (e.g., high-margin items, new arrivals), you can allocate budget and focus to maximize their impact. Including all products from a feed without segmentation can dilute campaign effectiveness, as the system may spend on less profitable items. While availability and product type can be useful for other campaign types, for Performance Max with omnichannel goals, aligning with performance and business objectives provides the most strategic advantage.