The seller can upload their products on Facebook. Based on that, subsequent ads (advertisements) could be created and can be displayed to their potential customers.
An active Facebook business account.
Steps to upload your products on Facebook
Step 1: Go to https://business.facebook.com --> Business Manager (hamburger) --> Assets --> Catalogues.
Figure 1: Catalogues in Business Manager
Step 2: Select an existing catalogue or create a new one as shown below.
Figure 2: Choosing a category Figure 3: Upload Product Info Figure 4: Catalogue successfully created
Step 3: Upload data feed (URL or CSV of Facebook Catalog).
Figure 5: 'Product data sources' in left panel Figure 6: 'Use data feeds' Figure 7: Copy your catalogue link and paste it as shown Figure 8: Catalogue upload successfully started