Link intelligence refers to the process of studying external netlinking for a website and possibly for its competitors.
Link intelligence allows one to build a linking strategy and to follow results in this field.
The main actions in link intelligence are:
analyze backlinks (website quality, anchor text, placement, etc..)
links development monitoring
bad backlinks detection
With the emergence of inorganic or bad backlinks issues, link intelligence encompasses toxic links detection.
The most known SEO tools dedicated to link intelligence is Majestic SEO software. GWT is also a useful tool in this field.