One of our clients originally had multiple ASINs in ad groups, which traditionally has worked in the past but doesn’t give the user the ability to see how each keyword interacts with each product. Each of products also have a different AOV (average order value) which made bidding inefficient.
Therefore, we split out each ASIN into its individual own ad group to be able to quickly identify how each keyword interacts with that product and price point, giving us the flexibility to adjust bids and placements for that product instead of a group of products.
This helped increase sales and decrease ACoS.