SEO today is more complex and challenging than at any other time.
Once upon a time, not that long ago, links were the most important thing in SEO.
But is that still true?
In this article, we explore the importance of link SEO today. We take a range of perspectives within the industry, analyze the empirical evidence, and consider Google’s recent statements and updates regarding the role of links in their ranking algorithm.
Backlinks and SEO: Today's confusion
Links are important. The quantity and quality of external links to a web page can affect its search rankings.
Besides the number of links, other factors also come into play:
- Link diversity (are the links coming from multiple sites?)
- Relevance.
- quality.
- authority.
Technical aspects and Google’s prioritization of editorial links (non-paid links) further influence the effectiveness.
Links build PageRank and help you rank for keywords. Although Google no longer publishes PageRank, it still influences their algorithm.
How much? Opinions vary: some believe PageRank is extremely important, others that its importance has almost disappeared.
Check out this LinkedIn post:
Posts like this can generate interesting discussion and bring to light some interesting perspectives.
Opinions on the importance of links vary widely, leaving many people confused.
If you're confused, know that you're not alone.
So, are links really as important as sellers claim, or are they an industry scam that can cost you thousands of dollars for links you don’t need?
The truth, as is so often the case, lies somewhere in between.
Let us consider these points of view further and evaluate them against the facts.
Google Statement and Updates
Before proceeding, it would be wise to check the recent comments from Google.
Let’s start with some comments from Gary Illyes, a webmaster trends analyst at Google, back in September, as reported by Search Engine Land.
- “I think they are [links] “I think links are important, but I think people are overestimating the importance of links. I don't agree that they're in the top three, and haven't been for a while.”
Then in March, Google released an update to its spam policy, removing the word “important” in reference to links as a ranking factor, a change that coincided with the March 2024 core algorithm update.
There was a bit of a stir back in April when Ilies suggested: The link wasn't that important. At the search meeting:
- “You only need a few links to rank a page. Over the years, links have become less important.”
John Mueller, a proponent of Google Search, also commented:
- “I recommend not placing too much emphasis on the absolute number of links. There are many ways for search engines to discover websites, including sitemaps. There are more important things to do on a website these days, and placing too much emphasis on links will mean wasting time on things that don't improve your website overall.”
Some of Google’s documentation still mentions links and PageRank as central elements of their ranking system.
Here's what Google's documentation has to say about PageRank:
- “It was one of the core ranking systems used by Google when it first launched. If you're interested, you can read the original PageRank research paper and patent to learn more. The way PageRank works has evolved significantly since then, and it's still part of our core ranking system today.”
So even though Google is reducing the importance of link data in its ranking algorithm, it seems like that’s slowly coming to an end.
As Google's mission statement page states:
- “We rate the importance of every web page using over 200 signals and a variety of techniques, including our patented PageRank™ algorithm, which analyzes which sites have been 'voted' as the best source of information by other pages on the web. As the web grows, this approach actually improves, because each new site becomes another point of information, another vote that counts.”
This suggests that links and PageRank will still be important in 2024. However, if we read further we find the following:
- “We never manipulate rankings to boost our partners' positions in search results, and no one can buy better PageRank. Our users trust our objectivity, and we would never be justified in betraying that trust for short-term gain.”
The statement that “no one can buy better PageRank” shows that Google is actively defending this part of their ranking algorithm.
This also suggests that Google thinks, or would have you believe, that paid link building services are ineffective: if such services were effective, Google couldn't claim that anyone could buy better PageRank.
This doesn’t mean that links aren’t important, but Google is investing heavily in defeating simple link building strategies.
Despite Google's efforts to reduce reliance on links and prevent backlink abuse, the SEO industry continues to promote link building as a valid tactic. The industry continues to generate business and educate the perceived ignorant.
Unless Google makes fundamental changes to its ranking algorithm and communicates them clearly to the industry, these practices will continue.
Google is looking to move away from links to rank content better, but what are the alternatives to PageRank?
So far, nothing.
But with Google's AI capabilities, that could change.
If Google could directly assess the usefulness of content without external links, there would be no need to rank web pages. Instead, responding to search queries would become an AI-driven, technical exercise in content extraction and display.
This change seems inevitable.
Empirical evidence and research
An important question to ask when working on SEO is, “Are my links currently working?”
Let’s take a look at research from Ahrefs, Backlinko, and MonsterInsights.
Study 1: Ahrefs backlink statistics and findings
Ahrefs, a platform for backlink analysis, keyword indexing, content optimization, and cloud-based technical SEO audits, updated its 2024 SEO statistics on March 18th.
Ahrefs found that there is a positive correlation between the number of sites linking to a page and that page's ranking and SEO traffic performance: Most highly ranked pages have between 5% and 14% more followed links each month.
Many other statistics from Ahrefs refer to publishers like Authority Hacker and contain survey-based data.
Study 2: Backlinko Search Rankings Research Results
According to a Backlinko study updated on March 24, “a site's overall link authority (as measured by Ahrefs Domain Rating) is strongly correlated with higher rankings.”
Google doesn't use SEO tool scores in their algorithms, but they do use PageRank, and Ahrefs Domain Rating is designed to simulate PageRank, so you'd expect a correlation if Ahrefs is accurate.
The Backlinko study also states:
- “Pages with more backlinks rank higher than pages with fewer backlinks. In fact, the #1 Google search result has, on average, 3.8 times as many backlinks as pages in positions #2 through #10.”
However, correlation does not mean causation – higher rankings may increase a page’s visibility and lead to more backlinks and citations – but the correlation between link authority and increased rankings is strong.
- “We found no correlation between page load speed (measured by Alexa) and ranking on the first page of Google.”
The above point is a bit misleading. Google does not adjust rankings based on Alexa page speed ratings. Instead, they use Core Web Vitals to evaluate page performance. Therefore, this statement may be based on poor quality input data.
Which leads me to the next point:
- “Getting backlinks from multiple different sites seems to be important for SEO. We've found that there is a correlation between the number of domains linking to a page and rankings.”
The importance of link diversity is commonly accepted within the search community.
Study 3: Monster Insight Ranking Factors Survey Results
WordPress plugin provider Monster Insights determined in January that backlinks have a “significant impact on Google's ranking algorithm.”
Monster Insights concluded that sites with a higher amount of backlinks usually rank higher in Google (on average).
- “Overall, backlinks from high authority websites are more valuable and can help improve your rankings than links from lower-reputation sites. Getting these links sends a signal to Google that your content can be trusted because other high-quality websites vouch for it.”
Understanding Linked Data and Related Claims
Most studies show a correlation between links, rankings, and search traffic, but they don’t address causation.
Do links increase a page’s rank, or do higher ranking pages attract more links?
This has been a big debate in SEO for over a decade.
Some have had success with link building, while others have seen no results or received manual action from Google.
I trust Ahrefs research the most because they provide tools and data without selling link building services, reducing bias. They have a massive index of over 14 trillion live backlinks.
Understanding the Role of Backlinks in 2024
Most importantly, links still matter.
But traditional link building, which often produces low-quality links, has been ineffective for a long time.
To be successful, you need an original idea and real-world events that can be featured in high-quality editorial coverage.
Don't “build” links, earn and attract links. Link generation isn't as simple as stacking blocks.
Although backlinks are becoming less important, they are still a vital part of SEO.
Taking a holistic, quality-driven approach to your link acquisition and broader SEO strategy will likely produce the best results in this changing environment.
Opinions expressed in this article are those of the guest author and not necessarily those of Search Engine Land. Staff authors are listed here.