To get started, you’ll have to provide Google with your product data (in the form of a product data feed) in Merchant Center and create a campaign in Google Ads. Google can then use your campaign to create ads on Google and round the web where potential customers can see what you’re selling or promoting.
They are called Shopping ads because they are shown in a different, illustrative and user-friendly format. In contrast to a text ad, which displays text only, Shopping ads show users an image of your product, as well as a title, price, store name etc. These ads give shoppers the feeling that they know what they are clicking on, which can result in more sales or more qualified leads.