To show products in a search from your online store in Google Shopping, Google offers you the option of creating a product Feed in the Google Merchant Center. This Google Shopping Feed has all the relevant product data, to help you land high in search results and significantly increasing your sales.
Google Shopping is free for buyers to use, funded by Google Ads and sellers paying for clicks on their products. Merchants can list their products manually or automatically using Product Listing Ads (PLA) tools. The offer is not an internet shop, it only offers search and comparison functions and links to the product pages of other internet shops.
Google LLC is an American multinational technology company that specializes in Internet-related services and products, which include online advertising technologies, a search engine, cloud computing, software, and hardware.