If you have spent any time reading SEO reports or buying backlinks, you have seen the abbreviations PA and DA. Page Authority (PA) and Domain Authority (DA) are metrics created by Moz that predict, on a logarithmic scale from one to one hundred, how likely a specific page or an entire website is to rank in search engine results. They are widely quoted in link building outreach, agency proposals, and competitor analysis. Understanding what they genuinely represent, and what they do not, will make you far better at evaluating opportunities and interpreting your own progress.

How We Build Authority That Actually Ranks

At AAMAX.CO we treat authority as something you earn through genuinely useful content, strong technical foundations, and relationships that produce editorial links. We are a full service digital marketing company providing web development, digital marketing and SEO services worldwide, so we can improve the site architecture, publish the assets worth citing, and run the outreach that lifts both page and domain level authority. Our SEO services focus on relevance and quality rather than bulk link purchases that inflate a metric while risking penalties. Hire us when you want durable authority growth tied to real rankings and revenue.

What Domain Authority Measures

Domain Authority estimates the overall ranking strength of an entire domain. Moz calculates it primarily from its link index, considering the number of unique linking root domains, the quality and authority of those domains, and patterns that suggest manipulation. Because the scale is logarithmic, moving from twenty to thirty is comparatively easy, while moving from seventy to eighty is extremely difficult and typically reserved for major publishers, universities, and global brands. DA is best used as a comparative signal: how does your domain stack up against the specific competitors ranking for your target queries?

What Page Authority Measures

Page Authority applies the same logic to a single URL. It reflects the links pointing to that specific page, the authority flowing internally from the rest of your site, and the domain's overall strength. This distinction matters because a powerful domain does not automatically give every page ranking power. A brand new blog post on a site with DA sixty may launch with a low PA until it accumulates internal links and external citations. Conversely, an older page with dozens of quality backlinks can carry a PA well above the site average and rank for competitive terms.

How the Scores Are Actually Calculated

Moz uses a machine learning model trained to correlate its link data with actual search result rankings. Inputs include the size and diversity of the linking domain profile, spam signals, and the structure of the link graph. The model is periodically recalibrated, which means your score can shift even if nothing on your site changed. Similar competing metrics exist: Ahrefs offers Domain Rating and URL Rating, Semrush offers Authority Score, and Majestic offers Trust Flow and Citation Flow. They rank websites in broadly similar order but use different indexes, so never compare a DA from one tool with a DR from another.

What Is a Good PA or DA Score

There is no universal target. A local plumbing company competing against other local plumbers may dominate with a DA of fifteen to twenty-five. A niche e-commerce store often needs thirty to forty-five to compete on category terms. National publishers and competitive finance or insurance sites usually sit above sixty. The practical approach is to check the DA and PA of the pages currently occupying the top five positions for your priority keywords. If they average forty-five and you are at eighteen, you know authority is a genuine bottleneck and you should target lower-competition long-tail terms first while you build strength.

Why These Metrics Are Not Google Ranking Factors

This is the most important caveat. Google has repeatedly confirmed it does not use Moz's Domain Authority or any third-party score. PA and DA are third-party predictions built on third-party crawl data. Google evaluates hundreds of signals including its own link graph, content relevance, user experience, freshness, entity understanding, and query intent. Because of that, you will occasionally see a low-DA page outrank a high-DA page simply because it answers the query better. Use PA and DA as directional tools for prioritisation and prospecting, never as the definition of success.

How to Increase Your Page and Domain Authority

Authority growth follows a fairly predictable path. First, publish content genuinely worth linking to: original research, data studies, practical tools and calculators, definitive guides, and expert commentary. Second, earn editorial links through digital PR, guest contributions on relevant industry publications, podcast appearances, expert quote sourcing, and partnerships. Third, optimise internal linking so authority flows from your strongest pages to the ones you want to rank, using descriptive anchor text and a shallow click depth. Fourth, clean up technical debt such as broken pages, redirect chains, and duplicate URLs that dilute link equity. Fifth, reclaim unlinked brand mentions and replace lost links after migrations. Finally, keep growing brand awareness through wider digital marketing activity, because visibility naturally attracts citations.

Practices to Avoid

Because DA and PA are so widely quoted, an entire industry exists around inflating them. Avoid purchased link packages, private blog networks, sitewide footer links, mass directory submissions, and irrelevant guest post farms. These tactics may briefly lift a third-party metric while damaging the trust signals Google actually evaluates, and recovery from a manual action or algorithmic devaluation is slow and expensive. Also be wary of outreach prospects that boast a high DA but show negligible organic traffic; that combination usually indicates artificial link inflation.

Using Authority Metrics in Your Workflow

In day-to-day work, PA and DA are most useful for three tasks: assessing whether a keyword is realistically winnable, vetting link prospects alongside traffic and topical relevance, and tracking whether your authority trend is moving in the right direction over quarters rather than weeks. Combine them with organic traffic estimates, referring domain growth, and impression data from Search Console for a complete picture. As search shifts toward AI generated answers, credibility and citation-worthiness matter even more, which is why many brands now pair link building with GEO services to be referenced inside those responses.

Final Thoughts

PA and DA are helpful shorthand for competitive strength, but they are predictions, not prizes. Build authority the durable way, through content people genuinely want to cite and a technically sound website, and the numbers will follow. If you want an experienced team to plan and execute that authority strategy, we would be glad to help you grow.