Universal product tagging is the process and ability to add tags that appear on product-related digital content anywhere online. 

Product tagging, in this sense, originated in restricted forms across various social media and e-commerce platforms. The digital marketing action or tagging process is now commonplace, widely accepted, and available via universal product tagging platforms. Companies like Instagram, Pinterest, and Shopify were early adopters of the product tagging process before becoming a generic mainstream idea or process and universally applicable online.