A unique visitor is a distinct individual who accesses a website within a given timeframe, typically measured over a day, week, or month. This metric filters out repeated visits from the same user, ensuring that each person is counted only once, regardless of how many times they return.
By tracking unique visitors, businesses can accurately measure their site's reach and audience size. This helps in understanding user acquisition trends, refining targeting strategies, and assessing the effectiveness of marketing campaigns or content in attracting new visitors to the site.