How can we make use of my existing customer base? / What is "customer match" used for?
If you have a large customer list, and if your Google account is eligible for "customer match," then you can implement some cross-selling and retargeting campaigns.
Because the audience size is limited and much smaller than an audience found on Google, we won't need a large budget for this strategy.
After about a month or two of gathering conversion data, we can also create a "similar audience" based on the customer list. Similar audiences are often effective, and we will incorporate it into our proactive targeting campaigns.