Companies can look at a different way to gain customers’ information and their preferences by a few things: their history and their cookies. One of the few companies that do this the best is Amazon; they have an excellent AI in finding out what people like and what people might want too. Google analytics has unique tools that can help other businesses to do the same as well in gaining customers’ attention.
Display is a campaign type that can help reach users based on what they’re passionate about and their habits and interests; detailed Demographics: Reach users based on long-term life facts. Another campaign type search and what this does is reach users based on what they’re passionate about and their habits and interests. The third one is video but has the same feature as a search campaign. Hotel is another one but does things a little differently because it Remarking things. It’s Reach users that have interacted with your business (website visitors, similar audiences, custom combination, and customer lists)
https://www.wordstream.com/blog/ws/2018/08/23/custom-affinity-audiences
In the website, it gives a better understanding of how to use custom-affinity audiences. It gives better insight into how to use it for your company.