What is Link Intersect?
Link intersect is a way used to analyze and compare backlink profiles of multiple websites, typically those of competitors.
To do a link intersect, you make a list with all the backlinks from the websites you want to compare. This lets you see which backlinks they have in common.
Looking at these shared backlinks shows you:
What sites are linking to multiple competitors
What linking strategies your competitors are using
Opportunities to get similar high-quality backlinks for your own site
So link intersect gives you useful information about how your competitors are getting links. You can use these insights to improve your own link-building strategy.