Link building is a concept that is part of the topic of OffPage Optimization and describes the process of gaining external links (also called backlinks). The goal of link building is to intentionally increase the amount of quality backlinks which point to your own website. Link building can be done by conventional strategies, or more creative means.
Why are backlinks important?
Backlinks represent a reference from one website [A] to another website [B]. Searchengines interpret a backlink as a recommendation. In this example, website [A] recommends website [B]. This recommendation is a significant signal for searchengines to evaluate the relevancy of a website on a specific subject.
You can get a detailed evaluation of the backlink profile of any domain you like, as a whole or for specific details, in the link-module of the SISTRIX Toolbox:
The SISTRIX Toolbox crawls 500.000 pages per minute, which is about 20 billion pages per month. As a result, the data of more than 250 billion links are being updated each month.