Going further, link building is the practice of intentionally earning inbound links that point to the pages of your site. Links (short for “hyperlinks”) refer to the bits of text that exist with an “href” attribute in HTML. Though links are often used to point to web pages, they may point to PDFs, images, and diverse types of files as well. Typically, internal links are meant to simplify the user navigation of your site. However, “link building” is all about building links on other domains that point back to your pages.

You can use several link building methods, but some of them are more valuable and reliable as compared to others. Essentially, backlink building methods are divided into two categories:

• Earning links: For earning links, you need to create high-quality content on your site so that others will naturally want to include a link for their own users in this content. For example, you may write an in-depth guide on a niche-specific topic, or publish an original research piece. Since the content will have enough inherent value, high-authority sources would surely want to link with it. This can be a big advantage since the links will appear natural to both search engines and users. This is just the right way of earning links and the best content marketing service companies use this method for achieving the objective. However, this is easier said than done because even quality content does not guarantee that you will get the links you want to earn. 
•  Manually building links: With manual link building, you can use a variety of tactics, ranging from spamming links on forum comments to having your articles featured on top-rated publications (along with links that point back to your website). On the downside, these tactics may be schemes that are designed to manipulate your search engine rankings. With such services, there is always a risk of earning a penalty from search engines. If this happens, you will end up in a tight spot and the value of any link earned is negated. Rather, you should rely on sophisticated techniques which are designed to deliver genuine value for the users. These techniques offer benefits to the creators and users alike, while giving you the opportunity to consolidate your site’s authority without the risk of penaltie