When another site links to yours, it is like a recommendation on the web: "for this topic, see this source". Search engines have used these recommendations as an authority signal for years, which is why backlinks are still a core part of SEO.
The problem is that the link market is full of risky offers: "1,000 backlinks cheap", PBN networks, automated directories. They raise numbers in the short term but, over time, put the site at odds with Google's spam policies.
In this guide we explain what a backlink is, how to recognise a quality link, safe methods that work in the Azerbaijani market and what to stay away from.
Short answer: a backlink is a link from another website to yours. A link given naturally by a relevant, trustworthy site is an authority signal; a bought or artificially created link is a risk.
What a backlink is and its role in SEO
A backlink (inbound or external link) is an HTML link from a page on one site to a page on another. For example, if a news portal cites your research and links to it, that is a backlink for you.
Google uses links to discover pages (crawling) and to assess their authority. But not all links are equal: one link from a trustworthy, relevant site is worth more than dozens of random ones.
Types of links: rel attributes
Google recognises rel attributes that describe the nature of a link. Details are in Google's documentation on qualifying outbound links.
| Attribute | When it is used | SEO effect |
|---|---|---|
| No attribute (dofollow) | Normal editorial link | May be counted as an authority signal |
| rel="nofollow" | The site owner does not want to endorse it | Google treats it as a hint |
| rel="sponsored" | Paid or advertising link | Should not pass authority |
| rel="ugc" | User content such as comments and forums | Treated as a hint |
Paid placement in itself is not forbidden — advertising is normal. The violation is placing a paid link to pass authority without rel="sponsored" or nofollow.
How to recognise a quality backlink
Metrics like Ahrefs' Domain Rating or Moz's Domain Authority are those tools' own calculations, not Google metrics. They give direction, but deciding by the number alone is a mistake. More reliable criteria:
- Topical relevance: a finance portal linking to an insurance site makes more sense than a cooking blog.
- Real audience: the page itself gets search traffic and has real readers.
- Editorial context: the link sits inside meaningful text, not in a footer or link list.
- Natural anchor text: the brand name, URL or a descriptive phrase; the same commercial keyword on every link is suspicious.
- Site quality: original content, clear authors, no "we sell posts on any topic" section.
A natural link profile
A healthy site's link profile is diverse: news sites, partners, directories, blogs, social profiles; a mix of dofollow and nofollow; most anchors are the brand name. Hundreds of identical links appearing in one month look artificial.
How to earn backlinks: methods that work
1. Content worth citing
The most durable links come from content people cite voluntarily: original research, market data, a useful calculator, a thorough guide. Survey results about the Azerbaijani market or an industry comparison table, for example, become sources for journalists and bloggers.
2. Expert commentary and PR
Journalists look for experts on a topic. Commenting for industry media and speaking on podcasts and webinars bring both links and brand mentions. Brand mentions also matter for AI answers — see our AEO/GEO guide.
3. Guest articles — with care
Writing a useful article on a relevant site with real readers still works. But the goal should be the audience, not the link. Mass, low-quality guest posts can be treated by Google as a link scheme.
4. Partners, clients, events
Suppliers, partner companies, events you sponsor and associations you belong to often keep partner lists or case studies on their websites. These are natural, relevant links.
5. Broken link building
Find links that no longer work on sites related to your topic and offer the owner your own useful page on that subject. It helps the site owner too.
6. Competitor link analysis
Use Ahrefs or Semrush to see which sites link to competitors. The goal is not to copy them, but to understand which types of content and partnerships earn links.
Risks: what to avoid
Google's spam policies list link schemes explicitly. The risky practices we see most:
- Buying or selling links to pass authority.
- Private blog networks (PBNs) — sites built only to give links.
- Mass "link to me and I will link to you" exchanges.
- Automated forum, comment and directory spam.
- Anchor text optimised with the same commercial keyword on every link.
What to do if spam links appear
Every site gets random spam links from time to time, and Google ignores most of them on its own. Use the disavow tool only when there is a real risk — for example, a past paid-link campaign or a manual action notice in Search Console. Google warns in its Search Console help that misuse can harm rankings.
Checking and measuring your link profile
Search Console — Links report
Free, and it is Google's own data: the sites linking to you most, your most-linked pages and anchor texts. A quarterly review is enough.
Ahrefs, Semrush
A wider database, competitor comparison, new and lost links. Do not compare numbers across tools — each has its own index.
What to measure
| Metric | Why it matters |
|---|---|
| Unique referring domains | More meaningful than the number of links |
| Share of relevant domains | An indicator of quality |
| Pages receiving links | Where the authority goes |
| Organic traffic and conversions of those pages | The business result of the links |
Links bring authority, but passing it on to your key service and product pages through internal links is your job. We explain this in our on-page SEO guide.
Frequently asked questions
What is a backlink?
A backlink is a link from a page on another website to your site. Search engines use it to discover pages and assess authority.
Can I buy backlinks?
Buying links to pass authority goes against Google's spam policies. You can buy advertising, but such links should be marked with rel="sponsored" or nofollow.
Are nofollow links useful?
Google treats nofollow links as hints. They are useful for traffic, brand awareness and a natural link profile, even if authority is not passed directly.
How many backlinks do I need?
There is no universal number. What matters is the number of quality, relevant referring domains compared with competitors. A few strong links beat many weak ones.
When should I use a disavow file?
Only when there is a real risk: a past artificial link campaign or a link-related manual action in Search Console. Google usually ignores random spam links on its own.
Is Domain Rating a Google metric?
No. Domain Rating (Ahrefs) and Domain Authority (Moz) are third-party tools' own calculations. They are useful for comparison, but they are not metrics Google uses.
Conclusion
A backlink strategy is not "the more the better". Links earned naturally from trustworthy, relevant sites build durable authority; artificial links are a risk.
The best start is creating one piece of content worth citing and building relationships with media and partners in your industry. We explain the other pillars of SEO in our what is SEO guide.
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