Should I create a different ad group in Google AdWords for each of my products?

Yes, you should generally create a different ad group in Google AdWords for each of your products. The number of ad groups you need for a Google AdWords campaign depends on the number of products you are advertising within a given Google AdWords campaign.

When you’re advertising multiple products with Google AdWords, you’ll usually want to separate your Google ads into different ad groups. Ad groups allow you to assign certain keywords to specific groups of ads.

Imagine you’ve created a single ad campaign for two products: a CD about Google AdWords and a CD about Google AdSense. You can divide your Google AdWords campaign into two ad groups, which you can call “AdWords CD” and “AdSense CD”. In each ad group, you include keywords that are specific to each CD. Naturally, you wouldn’t want the keywords “AdSense CD” to trigger an ad for your AdWords CD, and vice versa. That is why you separate your products into ad groups and assign distinct keywords for each.

See: What makes people instantly click Google Ads now?