Google Adwords lets you(a business owner), advertise with Google, your ads are served via google's partnered website! and you can actively monitor your ads!
but what if we want a company (lets call it company X) to advertise on our website, how can we serve company's X ads on our website and let company X monitor their advertisements click-through rate and the number of impressions the ad is shown on our website?
Is there a 3rd party service we could use?