Ad position means where your ad appears on the search results page, whether it is at the top, middle, or bottom. Ads at the top of the page get more clicks, but that does not always mean more sales. Sometimes the second or third position converts better because the people clicking there have read a little more before deciding. A lot depends on what you are selling. For urgent needs like emergency services, top position matters more. For bigger purchases where people compare options, lower positions can still perform well. Have you noticed a difference in conversions based on where your ads appear?