A backlink is simply a link from another website to yours. Search engines and the AIs treat each one as a small vote of trust.
When a respected site links to you, it is vouching for you. Get enough of those votes from the right places and you look more credible, so you rank higher and get named more often.
In plain terms: Think of backlinks as recommendations. One from a trusted friend beats a hundred from strangers.
Why backlinks matter
- Trust. Links from credible sites tell Google your content is worth ranking.
- Discovery. Crawlers follow links, so backlinks help your pages get found and indexed.
- AI citations. The AIs lean on the same signals, so well-linked pages get quoted more.
What makes a good one
- Relevance. A link from a site in your topic counts for more.
- Authority. One link from a trusted, established site beats many weak ones.
- Editorial. A genuine mention in real content, not a paid or spammy link.
A quick example
Say you run a coffee roastery. A national food magazine writing "we love the beans from YourRoastery" and linking to you is a strong, editorial, relevant backlink. A random link in a forum signature, or a paid listing on an unrelated directory, barely moves the needle, and a batch of those can even look spammy.
Frequently asked questions
How many backlinks do I need to rank?
There is no fixed number. A handful of links from trusted, relevant sites usually outperforms hundreds of weak ones, so focus on quality and relevance rather than a target count.
Can I buy backlinks?
You can, but it breaks Google's guidelines and risks a penalty. Earned editorial links are slower but safe; paid links are a shortcut that often backfires.
Do backlinks still matter with AI search?
Yes. The AIs lean on the same trust signals as Google, so a well-linked page is more likely to be quoted by ChatGPT, Claude and Perplexity, not just ranked.