Everything an online shop needs, taken care of. The gains lie in what you do with it.

Payments, inventory, shipping, tax rules and security are taken care of. You don't have to deal with the technology of selling and can focus on what you sell and to whom.
Unexpected shipping costs at the last step are the most frequently cited reason for abandoning a shopping cart. Show them earlier — on the product page or in the cart — and that reason disappears.
A well-populated product feed determines how your ads perform in Shopping and on Meta. Titles, images and categories matter more there than the ad budget.
A question or project on this topic?