What is conversion tracking?

In online advertising, a conversion occurs when a click on your ad leads directly to user behavior you deem valuable, such as a purchase, signup, page view, or lead. Google has developed a tool to measure these conversions, and ultimately, help you identify how effective your AdWords ads and keywords are for you.

It works by placing a cookie on a user's computer when he/she clicks on one of your AdWords ads. Then, if the user reaches one of your conversion pages, the cookie is connected to your web page. When a match is made, Google records a successful conversion for you. Please note that the cookie Google adds to a user's computer when he/she clicks on an ad expires in 30 days. This measure, and the fact that Google uses separate servers for conversion tracking and search results, protects the user's privacy.

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