Your client Kevin works for a retailer that sells eco–friendly products. He wants to attract an audience with an established interest in his message. What type of targeting would you recommend?
Contextual product targeting
The “Green Living Enthusiasts” affinity audience
Adding affinity audiences allows you to reach people based on their specific interests as they browse pages, apps, channels, videos, and content across YouTube and the Google Display Network as well as on YouTube search results. You can select from a wide range of categories — from autos and sports to travel and fashion — and we’ll show ads to people who are likely to be interested. Depending on your advertising goals and the stage of the purchase process your customers are in, you can choose to add different audiences to your ad groups.
Read more here: https://www.thinkwithgoogle.com/products/affinity-audiences.html