Remarketing helps you reach people who have visited your website. Previous visitors or users can see your ads as they browse websites that are part of the Google Display Network, or as they search for terms related to your products or services on Google.
Why You Probably Should Remarket
You remarket to stay engaged with your customers & potential customers, to upsell them on your services or products and to generally increase brand awareness. Mostly, you do it because it's easy for me to do it for you!
What I'll do
I want to set up your remarketing audiences so that people who visit different sections of your website become part of different "audiences" that you can remarket to when they surf the web. There is a bit of nuance here and my experience will help us determine what is exactly right for your situation.