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📖 SEO letter A

What is an Algorithm in SEO?

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Brandon
September 2, 2025
Reading Time
6 min

An algorithm is a set of rules and calculations that search engines use to determine how web pages should be ranked in search results. It considers factors like content quality, backlinks, site speed, and user experience.

Understanding SEO Algorithms and Why They Matter

Search engines want to deliver the best answers to users’ queries. To achieve this, they rely on algorithms, which are essentially automated decision-making systems.

For SEO professionals, algorithms are the invisible judges that decide whether your site appears on page one or gets buried deeper. Google’s algorithms look at hundreds of ranking factors, including relevance, authority, and usability.

Why it matters:

  • Rankings can shift overnight when algorithms change.

  • Algorithms push businesses to maintain high-quality, trustworthy websites.

  • Understanding them helps you align your SEO strategy with search engine goals.

How Algorithms Impact Different CMS Platforms

WordPress

  • Plugins may help with optimization, but thin or duplicated content can still trigger ranking losses.

  • Algorithm updates like Helpful Content often hit WordPress blogs that over-optimize.

Shopify

  • Product descriptions copied from suppliers may cause issues.

  • Algorithms often demote e-commerce stores with slow mobile performance.

Wix

  • Overuse of generic templates may lead to weaker signals for relevance.

  • SEO success depends on customized, optimized content.

Webflow

  • Great for design, but algorithm-friendly performance requires proper technical setup.

  • Sites ignoring structured data may rank lower.

Custom CMS

  • Flexible but risky if technical SEO is overlooked.

  • Algorithms penalize poor site speed, duplicate pages, or crawlability issues.

Why Algorithms Are Important Across Industries

E-commerce: Algorithms filter out duplicate product pages and reward unique, user-friendly stores.
Local Businesses: Local search algorithms prioritize relevance, proximity, and reviews.
SaaS: Algorithms value helpful content that explains solutions, not just sales-driven pages.
Blogs and Publishers: Algorithm updates fight clickbait or thin content, rewarding value-rich articles.
Affiliate Sites: Search engines demote sites built only for monetization without real user benefit.

Every industry must stay aware of how algorithms evolve, as they directly affect visibility and competitiveness.

Best Practices: Do’s and Don’ts

Do’s

  • Create original, value-driven content.

  • Optimize for mobile-first indexing.

  • Earn natural backlinks from trusted websites.

  • Improve Core Web Vitals for better user experience.

  • Stay informed on algorithm updates like Panda, Penguin, and Helpful Content.

Don’ts

  • Do not stuff keywords into content.

  • Do not buy backlinks in bulk.

  • Do not ignore technical issues like crawl errors.

  • Do not duplicate or spin existing content.

  • Do not rely solely on one SEO tactic.

Common Mistakes to Avoid

  • Assuming algorithms are static. In reality, Google updates them regularly.

  • Chasing loopholes instead of building long-term strategies.

  • Ignoring user experience, which is central to ranking.

  • Failing to diversify content beyond just keywords.

  • Not monitoring analytics to catch algorithmic impact early.

FAQs

What does “algorithm” mean in the context of SEO?

An algorithm in SEO refers to a set of rules, calculations, or processes that search engines use to determine which web pages to show for a given search query and in what order. These rules analyze signals like relevance, content quality, links, and user behavior to rank pages.

What are “search algorithms” and how are they used?

Search algorithms are complex systems employed by engines like Google to sift through indexed content and decide what’s most useful to a user. They use many ranking factors (hundreds) and are constantly updated or refined to improve accuracy and relevance.

Why do search engines update their algorithms?

Search engines update algorithms to better meet user needs: to improve the understanding of queries (e.g. natural language), fight spam or low-quality content, adapt to new usage patterns (mobile, voice), and ensure more relevant, high quality, trustworthy results.

What are some famous examples of SEO algorithms/algorithmic updates?

  • Google Panda penalizes sites with low-quality or thin content.

  • Google Hummingbird focuses on understanding the intent behind queries, improving natural language processing.

  • RankBrain machine learning-based component that helps Google interpret unseen or ambiguous queries.

How should SEO strategy adapt to search algorithms?

SEO strategies should focus on creating high-quality, relevant content, improving user experience (speed, mobile-friendliness), building clean and authoritative backlink profiles, and avoiding spammy tactics. Also, staying aware of algorithm updates helps in adjusting tactics proactively.

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