Link building is a key component to off page SEO and the quality and quantity are two key factors in search engine rankings. When other links are present on the web that link back to a main website, it will increase its authority; especially if those links are coming from reputable and relevant sources.
Link building can be done through press releases, guest posting, videos, contests, sponsors, blogs and info-graphics. When great content is created, it’s bound to get shared. Sharing involves the use of posting links back to a website. Most people have been a part of link building without even knowing it.