To implement a particular strategy, you have to naturally know it in the 1st place. It is a talent to bring traffic to your website. And as any ability you have to learn it or hire it out. Outsourcing is starting to become more popular as website owners notice how hard traffic generations is. Others become traffic generation professionals and in addition to enabling their own websites, they supply traffic generation services or consultations to other website owners.
But even if you outsource traffic getting, you have to know at least the basics if you would like to run an online business. You cannot always rely on others.