*knock knock* "Who's there?" "A visitor."

To be specific, a Unique Monthly Visitor (UMV) has arrived. An individual who has traveled far and wide (or not) through the online realm to visit your website at least once within a given month. Websites track (with permission, of course) unique visitors with a cookie (not this kind…🍪) to the number of times they have visited the website. This is important to help understand your audience's behavior and measure the popularity of your website, campaign, or investment.