What is Domain Authority and Why Does It Matter?

It’s a curious thing, Domain Authority. It is not a metric used by Google to determine rankings, but a good Domain Authority is a key indicator of your site’s SEO potential. It’s a predictive metric to help webmasters and SEO professionals understand and improve their site’s likelihood of ranking well.

So, What is Domain Authority?

Domain Authority (DA) is a metric developed by Moz, one of the oldest SEO software companies, to predict how well a website will rank on search engine result pages (SERPs). It is a score that ranges from 1 to 100, with higher scores indicating a greater ability to rank.

A new website with no inbound links will typically start with a domain authority of 1. As you might expect, sites belonging to famous, well-known or authoritative organisations tend to have higher Domain Authority scores.

For example:

• cnn.com – 93
• bbc.co.uk – 95
• amazon.com – 96

Because it is not a Google metric, a high DA score does not automatically mean your site will rank well in search engines. But the correlation is high. The factors contributing to a strong DA score align closely with those required to perform well in search.

How is DA Calculated?

The score is calculated based on various factors, including the number and quality of backlinks, the overall structure of the site, and the quality of content. According to Moz:

The quality and quantity of backlinks pointing to your site heavily influence your DA.

It makes sense. If an important site links to you, it’s likely that you are, at least, quite important.

But How is Domain Authority Calculated Exactly?

Guess what? It’s a secret. However, Moz is happy to state that over forty factors are involved in the algorithm.

Most importantly:

• Linking Root Domains: The number of unique domains linking to your website. A site with many high-quality links from reputable sources will have a higher DA.
• Total Number of Links: The overall quantity of inbound links also contributes to your DA. However, quality is far more important than quantity.

But also:

• MozRank and MozTrust: These are proprietary metrics used by Moz to assess the quality and trustworthiness of the linking sites. MozRank measures the quality of backlinks, while MozTrust evaluates the trustworthiness based on the links coming from highly trusted sources.
• Site Structure and Content Quality: Well-organised sites with high-quality content tend to have higher Domain Authority scores. This is because search engines, and therefore the tools that predict their rankings, favour sites that are easy to navigate and offer valuable content.

So, If Google Doesn’t Use It, Why DA Matter?

While Domain Authority is not a direct ranking factor for Google, it serves as a useful indicator of your website’s overall SEO health and potential performance in search engines. Here’s why it matters:

1. Benchmarking and Competitor Analysis: DA allows you to benchmark your site against competitors in the same field. Niche software developers are unlikely to attract the same authority as a national broadcaster – Domain Authority allows you to compare like with like.
2. Domain Authority is independent of specific search terms. A rank for a specific term may conceal weak performance elsewhere. DA allows you to gain a more general view of likely search performance.
3. Link Building Strategies: Understanding your Domain Authority can help you refine your link-building strategies. Sites with higher DA scores are more attractive targets for earning high-quality backlinks, which in turn can improve your DA even further.
4. Client Reporting: For SEO agencies and professionals, DA is a convenient metric to include in reports to clients. It provides a clear and understandable way to demonstrate progress over time and show the impact of SEO efforts.

How Can I Find Out My Domain Authority

The simplest method is to use Moz’s own domain authority checker tool. It’s free to use three times a day.

How Can You Improve Your Domain Authority?

Improving your Domain Authority is a gradual process, as it involves enhancing several aspects of your website’s SEO. As with any SEO activity, slavishly hunting a higher DA score in itself is likely to be counter-productive.

Getting these SEO basics right should result in a natural improvement of your score:

1. Focus on High-Quality Content: Consistently producing valuable, relevant, and engaging content can attract natural backlinks and improve your DA.
2. Earn High-Quality Backlinks: Pursue backlinks from reputable, authoritative websites. This could involve guest blogging, creating shareable infographics, or getting mentioned in reputable publications.
3. Enhance Site Structure and User Experience: Ensure that your site is easy to navigate, with a clear hierarchy, and is mobile-friendly. This can improve user experience and contribute to better SEO performance.
4. Optimise On-Page SEO: Pay attention to on-page elements like meta tags, headers, keyword optimisation, and internal linking. These factors help search engines understand your content and rank it appropriately.
5. Audit Your Backlink Profile: Regularly audit your backlink profile to identify and disavow any low-quality or toxic links that could harm your DA.

Conclusion

Domain Authority is a crucial metric in the world of SEO, offering a simple insights into your website’s potential search engine performance. While it’s not a direct ranking factor, it provides a useful benchmark for understanding and improving your site’s SEO health. By focusing on quality content, earning high-quality backlinks, and ensuring a strong site structure, you can gradually increase your Domain Authority, ultimately enhancing your site’s visibility and success in search engine rankings.