Definition
What is Impressions?
Impressions represent the number of times a page or search result appeared in a user's view. In Google Search Console, an impression is counted whenever a link URL appears in a search result that was loaded by a user, even if the result was not scrolled into view. In advertising, an impression means the ad was served to a user's browser.
Why it matters
Impression volume reveals the total visibility of your content in search results and is the starting point for calculating click-through rate and understanding search demand.