Speed. AdWords gets you on page one immediately.
Relevance. Targeted advertising with AdWords captures user intent which is the key difference between search advertising and traditional interruptive advertising. Ads show only to those who demonstrate interest, and when they do it.
Pay only for results. Pay Per Click! You can chose to pay only when someone clicks an ad, not merely when an ad has been displayed.
Precise control over advertising budget, geography, and time. You chose how much to spend, where, and when.
Support your SEO campaign. Google Search not longer provides complete keyword information for regular organic, SEO-driven web traffic while AdWords delivers exact information about which keywords searchers are using.
Get traction in the marketplace. Paid advertising can be used to “prime the pump”, to bring your website and business to your market’s attention. Once they know about you, they start coming back directly or by using regular unpaid search.
Get smarter faster: with paid advertising you can more quickly experiment, gain business intelligence, and improve results.