I suspect when you state "best infrastructure" you mean method. The plain and simple answer (in my opinion) is a well-designed landing page. So often, companies set up SEM campaigns to drive traffic to their site. The problem is, how do you accurately analyze your conversion ratios if you present users with multiple conversion opportunities?

Studies show that a well-designed landing page converts. A well-designed landing page is one that focuses the user on a single point of conversion. The moment you require a user to choose among different conversion points, you draw ambiguity and risk losing a conversion all together. Therefore, an effective landing page gives visitors a "take it or leave it" decision.

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Ryan Gerardi