Google Merchant account setup allows you to upload your products on Google Shopping. You can select the products you want to upload and sync product pricing and inventory via Content API for Shopping.
Setting up Google Shopping to take control of the advertisements by selecting the products on which you want to run the ad campaign. Use it as a gateway to advertising your products with Google shopping. It allows you to store essential product information needed to generate and serve your product ads to potential customers. Give your sales a boost by showcasing your products or services to customers exactly where they are finding them.