Link building in 2015 is assumed to be dead contradictory to the belief that building quality backlinks is one of the key aspects of SEO. Google considers quality links as a part of its ranking algorithm. Directly building links isn’t the right way. Your main aim should be to guarantee that your content goes viral on its own. Let your users share it on their own websites and blogs instead of you creating the links. More than relying on link building, depend on link gaining.