Each impression = 1 view of your Campaign on your site. For example, if a site visitor sees a Banner on one page and then moves to another page and sees a Banner and a Pop Up, that will count as 3 impressions. When estimating the ideal impression limit for your store, we recommend multiplying your monthly site traffic X 3, to be safe. For example if your average monthly site traffic is 10,000, you’ll likely need 30,000 monthly impressions.