What’s the purpose of products groups in a Shopping campaign?

Question

What’s the purpose of products groups in a Shopping campaign?￼

Accepted Answer

Product groups are used to specify which products from your feed you want to advertise in each campaign.

Answer

Product groups are remarketing lists that you want to advertise in each of your campaigns.

Answer

Product groups are predefined themes that you can select in each of your campaigns.

Answer

Product groups are keywords that are defined by categories you can select in each of your campaigns.

What’s the purpose of products groups in a Shopping campaign?￼