The document discusses advertising options on YouTube, Instagram, and LinkedIn. It outlines that YouTube has over 1 billion users and 4 billion daily views. Advertisers have 5 options including display ads, in-stream video ads, and overlay ads. Instagram has over 200 million active users and advertisers can use the platform's own account, product ambassadors, or run native ads. LinkedIn caters to a professional audience, with options like sponsored updates and text, image, or video classic ads. All three platforms allow for robust targeting of audiences based on interests, demographics, and other factors.