It’s no longer a question of if or when because the time has already come and gone. Mobile already eclipsed…
SEO is an ever changing world there’s no doubt. There was a time a few years ago when the SEO specialist worked diligently to figure out the “secret formula” for getting sites to rank high in the SERPs. For a long time SEO best practices were built around finding the right keyword density, building links from high ranking sites, image optimization, etc. But that was when SEO was considered a science and all the boxes in the forms just needed to be filled out. Today, SEO has made a shift from this type of pseudo-science to being more of an art form. It’s no longer a formulaic endeavor with well defined steps to follow. You cannot “do SEO” one time and then walk away and realize success. It takes a multitude of ongoing tactics, skills and strategies to get a site to rank.