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How SEO Works: A Beginner-Friendly Guide to Rank Higher

Written by Alessandro Boscolo-Conway | 13-09-2025

TL;DR: How SEO Works

Search Engine Optimisation (SEO) helps websites appear higher in search results by aligning content with what users and search engines are looking for. It involves three main areas:

  • On-page SEO: Optimising your content and structure for relevance and clarity.

  • Off-page SEO: Building authority through backlinks and online reputation.

  • Technical SEO: Ensuring fast, mobile-friendly, crawlable websites with clean architecture.

Modern SEO also prioritises E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness), entity-based optimisation, and alignment with user intent.

With AI now powering features like Google’s AI Overviews and Bing’s AI answers, SEO must focus on creating helpful, well-structured, and trustworthy content that answers questions clearly.

A successful SEO strategy includes:

  • Clear objectives (traffic, conversions, authority)

  • Continuous performance tracking (rankings, CTR, Core Web Vitals)

  • Integration with content, brand, and digital marketing efforts

Done well, SEO drives consistent, sustainable traffic and business growth over time.

Quick start: how SEO works step-by-step

SEO helps search engines discover, index, and rank content based on relevance, quality, and authority. It improves a website’s visibility in search results through strategies like keyword optimisation, backlink building, and technical enhancements.
 
  1. Crawl – Bots discover content across the web.

  2. Index – Pages are analysed and stored in search engine databases.

  3. Rank – Algorithms decide which pages appear in results based on signals like content relevance, E-E-A-T, and backlinks.

The takeaway: Your SEO title is like a handshake with your audience. Make it firm, clear, and compelling. Do not just describe what the post is about. Give people a reason to click.

How SEO Works: a comprehensive guide to search engine optimisation

Are you struggling to get more people to visit your website? A key fact is that understanding how SEO works can fundamentally change your online visibility. SEO helps search engines discover, evaluate, and rank your content, making it easier for people to find you through organic search.

This guide will show you the steps to improve your search engine ranking and get more traffic, covering key concepts like crawling, indexing, ranking factors, algorithm updates, and AI-driven changes in how search works.

Keep reading to learn more.

Key takeaways

  • SEO stands for Search Engine Optimisation. It helps websites appear higher in search results by aligning content with search intent.

  • There are three main parts of SEO: on-page, off-page, and technical.

  • Good content, proper use of keywords, a mobile-friendly design, and fast site speed improve your ranking.

  • AI and recent tech changes, like Google's AI Overviews and helpful content system, are reshaping how SEO works.

  • Using tools like Google Analytics and Google Search Console can track your SEO performance and uncover areas to improve.

  • Demonstrating E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness) and clear topical relevance helps your content rank better in today’s AI-enhanced search environment.

What is SEO and why does it matter in 2025?

SEO (Search Engine Optimisation) helps your website appear in search results when people look for topics related to your business. It involves aligning your content with user intent and search engine algorithms to improve visibility, drive organic traffic, and grow online presence.

In today’s AI-driven search environment, SEO isn’t just about keywords. It’s about matching content to searcher needs, backed by strong signals of expertise and relevance.

What does SEO mean?

SEO stands for Search Engine Optimisation. It is the process of enhancing your website to increase its visibility in organic (non-paid) search results on platforms like Google and Bing.

A successful SEO strategy involves:

  • Using keywords your audience is actually searching for.

  • Optimising content to answer those queries clearly and comprehensively.

  • Improving technical aspects of your site so search engines can crawl, index, and understand your pages efficiently.

Search engines now use advanced AI models to assess not just keywords, but meaning, context, and credibility. That’s why SEO now includes attention to factors like E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness) and entity-based signals, how well your site is associated with known topics and sources.

Even small business owners can attract organic traffic by understanding and applying SEO best practices, especially as search engines get better at surfacing trusted, helpful content.

What are the three core pillars of SEO?

Modern SEO is built on three main pillars: on-page SEO, off-page SEO, and technical SEO. All three need to work together to support visibility in AI-enhanced search engines.

  • On-page SEO: This focuses on what’s on your website like your content, internal linking, titles, meta descriptions, and keyword usage. Today, on-page SEO also includes how well your content satisfies search intent and whether it demonstrates E-E-A-T.

  • Off-page SEO: This involves what happens outside your site to build its authority, primarily through backlinks. Backlinks from relevant, authoritative sources act as “votes of confidence” in your content’s trustworthiness. Social signals and brand mentions can also play a supporting role here.

  • Technical SEO: This is about your site’s infrastructure, ensuring search engines can efficiently crawl and index your pages. It includes fast load times, mobile responsiveness, secure protocols (HTTPS), and proper schema markup. With AI-powered indexing, technical clarity and structured data are even more important.

These pillars are interconnected. For example, having helpful content (on-page) won’t matter if search engines can’t crawl it (technical) or if it has no credibility signals (off-page).

Pro Tip: Balance your focus. Great content won't rank without technical SEO, and backlinks won’t matter if your site isn't user-friendly. Each pillar amplifies the others.

What's the difference between paid and organic search?

Paid search involves paying to appear at the top of search engine results pages (SERPs), typically through platforms like Google Ads. These results are marked as ads and provide immediate visibility, but can be expensive and stop delivering traffic when the budget runs out.

Organic search, on the other hand, earns visibility through effective SEO. It may take more time to build, but the traffic is free, sustainable, and often more trusted by users.

Organic results benefit from:

  • Better click-through rates in many industries.

  • Long-term visibility with no ongoing ad costs.

  • Enhanced credibility due to their perceived impartiality.

Modern SEO helps you rank organically by addressing intent, expertise, site experience, and authority, all of which play into how search engines decide what content to prioritise, especially in AI-curated results.

Pro Tip: Don’t optimise for search engines. Optimise for people. Google's algorithms are increasingly designed to reward sites that demonstrate real expertise and solve user problems effectively.

How does SEO work step by step?

Search engines like Google use complex, AI-driven systems to discover, analyse, and rank billions of web pages. Their core processes, crawling, indexing, and ranking, determine which content appears where in the search results.

Understanding how these systems work is key to making sure your content gets discovered and prioritised by modern search engines.

What are crawler bots and how do they work?

Crawler bots (also called spiders or web crawlers) are the first step in the SEO process. These bots systematically browse the internet, visiting links and collecting information about each page they find.

Here’s how crawling works:

  • Bots start from a list of known URLs.

  • They follow internal and external links to discover new pages.

  • They read page content, code, tags, and structure.

Search engines use this crawl data to determine the purpose, relevance, and structure of your content. Pages that are hard to navigate, buried in broken links, or blocked by robots.txt may be missed entirely.

In 2025, with AI-based crawling (e.g., Google's Caffeine infrastructure and Googlebot Evergreen), search engines now render JavaScript-heavy pages, simulate user interactions, and detect content quality signals even during crawling.

To help crawlers:

  • Ensure a clear, crawlable site structure.

  • Use internal links to guide bots to your most valuable content.

  • Avoid orphan pages.

  • Submit an XML sitemap via Google Search Console.

What's indexing and why does it matter?

Once your pages are crawled, search engines index them. This means storing them in a vast searchable database. Pages must be indexed to appear in search results.

The indexing process considers:

  • Content clarity and completeness.

  • Use of structured data to help define what a page is about.

  • Presence of canonical tags, meta tags, and proper headers.

  • Consistency of E-E-A-T signals (e.g., who wrote the content, their expertise, and how the page establishes trust).

Advanced AI models like MUM and SMITH help search engines interpret meaning beyond keywords, using context and semantics. Indexing now also involves evaluating whether the page aligns with user intent and whether it contributes helpful, original content.

Tips for better indexing:

  • Use schema.org markup where possible.

  • Maintain a fast, secure, mobile-friendly experience.

  • Avoid thin, duplicate, or low-quality content.

  • Keep content updated and focused on known entities and clear topics.

If your page isn't indexed, it won’t appear in SERPs, no matter how good it is.

What are the key ranking factors in SEO?

Once indexed, search engines use hundreds of ranking factors to determine where each page should appear in search results. In recent years, these factors have evolved to reward not just relevance, but trustworthiness, engagement, and helpfulness.

Pro Tip: Want to rank? Prioritise building topical clusters, groups of interlinked content around a subject. This boosts both keyword coverage and entity authority.

Key modern ranking factors include:

  • Content quality: Google prioritises in-depth, original, well-written content that fulfills a clear purpose. Pages that show Experience, Expertise, Authoritativeness, and Trustworthiness (E-E-A-T) perform better.

  • Keywords and semantic relevance: Pages that match both the keywords and intent of a query rank higher. Use natural language, related terms, and clear topical focus.

  • User experience (UX): Fast-loading, mobile-friendly, secure websites with clear navigation rank better. Core Web Vitals (load time, interactivity, visual stability) are confirmed ranking signals.

  • Backlinks and authority: Quality links from reputable domains signal your content is trustworthy. AI systems can detect manipulative links, so focus on natural, editorial links.

  • Entities and topic clarity: Search engines now evaluate how well a page aligns with a known topic or entity. For example, an article on “SEO tools” should mention brands like Ahrefs, SEMrush, etc.

  • Freshness and update frequency: Google prefers up-to-date information, especially for topics that change often. Update your content regularly to stay competitive.

  • Engagement signals: While debated, factors like bounce rate, dwell time, and CTR may help search engines understand what users value.

Google emphasises E-E-A-T and helpful, people-first content as key ranking signals in its Search Quality Evaluator Guidelines and Helpful Content System.

Search engine algorithms no longer rely purely on keyword density. They use AI to understand context, credibility, and overall usefulness. Optimising across all these factors increases your chance of ranking.

Pro Tip: Use Google Search Console to confirm your pages are crawled and indexed. Pages not in the index are invisible to search, regardless of how good your content is.

What is RankBrain and how does it impact SEO?

RankBrain is Google’s machine-learning system used to help interpret search queries, especially unfamiliar or complex ones.

It plays a key role in:

  • Understanding the intent behind vague or conversational searches.

  • Learning from user behaviour (e.g. clicks, bounce rates, dwell time) to evaluate which results are most helpful.

  • Re-ranking results based on ongoing user interaction data.

For example, if a page in position #3 consistently gets more clicks and lower bounce rates than #1 and #2, RankBrain may adjust rankings accordingly.

What RankBrain looks for:

  • Is the content aligned with the query’s intent?

  • Are users engaging with the page or quickly bouncing?

  • Does the page provide a satisfying experience?

To benefit from RankBrain:

  • Write naturally and clearly.

  • Anticipate user questions and answer them directly.

  • Focus on clarity, completeness, and helpfulness.

RankBrain rewards pages that solve problems and deliver value, not just pages that repeat keywords.

How can you create an effective SEO strategy?

A successful SEO strategy requires more than just publishing content and hoping it ranks. It involves setting clear goals, aligning with how modern search engines work, and using data to guide ongoing improvements.

In today’s AI-enhanced search environment, building a competitive SEO strategy means focusing on user intent, E-E-A-T signals, and entity alignment, while continually adapting to evolving ranking systems.

Pro Tip: Start with a content audit using tools like Ahrefs or SEMrush. Fix underperforming pages before creating new content. It’s often the fastest route to growth.

How do you set realistic, measurable SEO goals?

Setting clear and measurable SEO objectives gives your strategy focus and structure. It also ensures your efforts are aligned with business goals and can be tracked effectively over time.

Here’s how to develop strong, modern SEO goals:

  • Define your audience and search intent: Go beyond demographics. Understand why people search for your content. Are they looking to buy, learn, compare, or solve a problem?

  • Increase organic visibility: Aim to grow impressions and rankings for high-intent, relevant keywords across different formats: featured snippets, local packs, People Also Ask, etc.

  • Improve topical authority: Create in-depth content clusters around key themes to establish subject-matter expertise and build entity-based relevance.

  • Boost engagement and retention: Don’t just drive traffic. Optimise the experience to lower bounce rates and increase time on site. Google’s algorithms may reward helpful, engaging content with better rankings.

  • Strengthen trust signals: Include author bios, clear citations, trust badges, and up-to-date content to reinforce E-E-A-T. This is especially important for YMYL (Your Money or Your Life) topics.

  • Track performance rigorously: Set KPIs for traffic, rankings, conversion rate, and user experience. Use segmented data to analyse performance by page type, device, location, and audience group.

  • Adapt continuously: SEO is never “done.” Adjust goals based on performance, search trends, or algorithm updates (e.g., Google’s Helpful Content Update, core updates, or AI Overviews evolution).

  • Integrate with broader business and marketing goals: Align SEO with sales, lead generation, brand growth, or product launches. SEO should support and enhance your full marketing funnel.

For example, the March 2024 Core Update introduced stronger penalties for unoriginal content, while the rollout of AI Overviews has changed how visibility is distributed on results pages.

 

What SEO metrics should you track in 2025?

Effective SEO strategies are always guided by metrics. In 2025, it’s important to track both traditional SEO KPIs and AI-driven visibility insights.

According to Backlinko, the #1 result in Google gets an average CTR of 27.6%, showing the high value of top organic rankings.

Key metrics include:

  • Organic traffic growth: Monitor sessions from organic search, segmented by landing page and keyword intent.

  • Keyword rankings: Track primary and secondary keywords across mobile and desktop, including SERP features (e.g., rich snippets, AI Overviews).

  • Search visibility score: Use tools like SEMrush or Ahrefs to gauge your presence across your keyword universe.

  • Click-through rate (CTR): Identify how well your pages attract clicks in SERPs—optimise titles and meta descriptions accordingly.

  • Bounce rate and dwell time: Understand whether users are satisfied with your content or leaving quickly.

  • Conversions: Track email signups, purchases, downloads, or form submissions from organic traffic.

  • Backlinks and referring domains: Measure both the quantity and quality of backlinks from authoritative sources.

  • Core Web Vitals: Track performance metrics like Largest Contentful Paint (LCP), Interaction to Next Paint (INP), and Cumulative Layout Shift (CLS).

  • Local pack visibility: For local businesses, monitor how often you appear in map results, especially for branded and non-branded queries.

  • SERP real estate: Track how many featured snippets, FAQs, videos, or image results your content appears in.

These metrics help you diagnose issues, identify opportunities, and communicate ROI across your team or clients.

Key metrics to measure SEO success

Tracking the right metrics helps you see if your SEO efforts are working and where to improve. Instead of monitoring numbers in isolation, focus on metrics grouped by business objectives.

Traffic growth

The first sign that SEO is working is more people finding your site through search.

  • Track organic sessions in Google Analytics 4 (GA4) to measure growth over time.

  • Monitor impressions and clicks in Google Search Console → “Performance” report.

  • Use SEMrush or Ahrefs to watch ranking changes for your most valuable keywords.

Pro Tip: Look beyond vanity traffic. Prioritise keywords and pages that attract high-intent visitors.

Technical health

Even the best content won’t rank if search engines can’t crawl or index your site.

  • Check Core Web Vitals in PageSpeed Insights to measure site speed and UX.

  • Identify crawl and indexing issues in Search Console’s “Pages” report.

  • Audit site structure and broken links using Screaming Frog or Sitebulb.

Pro Tip: Fixing crawl issues can have an immediate impact—pages not indexed will never rank.

Engagement & conversion

SEO should deliver business results, not just traffic. Track how visitors interact with your site.

  • Measure click-through rate (CTR) and bounce rate by landing page.

  • Track conversions (form fills, purchases, sign-ups) from organic traffic in GA4.

  • Review heatmaps and session recordings with tools like Hotjar to understand user behaviour.

Pro Tip: A small increase in conversion rate often has more ROI than a big increase in traffic.

This structured approach helps ensure you’re not just “tracking everything,” but instead measuring what matters most to your growth.

What are real examples of SEO objectives that drive growth?

To help you shape actionable goals, here are updated examples of SEO objectives tailored to today’s environment:

  • Grow organic traffic by 30% in 6 months by targeting long-tail keywords with informational intent through blog content.

  • Earn 25 new referring domains from relevant authority sites via link-worthy content (e.g., original research or comparison guides).

  • Achieve top 3 rankings for 10 commercial-intent keywords within 4 months for a specific product/service.

  • Optimise existing blog content to appear in Google's AI Overviews or featured snippets by enhancing clarity and question-driven formatting.

  • Improve Core Web Vitals scores sitewide to exceed Google’s page experience thresholds within 3 months.

  • Increase organic conversion rate from 1.2% to 2.5% by refining CTAs and improving product page UX.

  • Gain visibility in local search pack for “[product/service] near me” queries in [target city] through Google Business Profile optimisation and local citations.

Each objective should be SMART (Specific, Measurable, Achievable, Relevant, Time-bound) and connected to search intent and audience needs.

How does SEO work in practice?

SEO isn’t just theory. It delivers measurable results when applied correctly. Here are real-world examples across different Irish businesses that show how SEO strategies turn into rankings, traffic, and conversions.

Local business example: a bakery in Cork

A family-run bakery in Cork publishes a blog post titled “Best Birthday Cakes in Cork”. The team:

  • Targets long-tail, location-based keywords like “custom birthday cakes Cork”

  • Optimises the post’s title, meta description, and internal links

  • Adds photos with alt tags, FAQs, and a clear call-to-action for online orders

To boost reach, they promote the post on local Facebook groups and earn backlinks from food bloggers and event directories. Within weeks, the post starts ranking on page 1 for local search queries, resulting in more calls, orders, and in-store visits.

Impact: Better local visibility and increased foot traffic.

E-commerce example: a fashion retailer

An online fashion store selling women’s dresses notices their product pages are underperforming in search. To fix it, they:

  • Rewrite product descriptions to be unique and informative

  • Add structured data (Product schema) for size, price, and availability

  • Optimise image file names and alt text for Google Image Search

They also improve site speed and mobile usability. After a few weeks, these updates lead to increased impressions in Google Shopping and a rise in organic sales.

Impact: Improved product visibility and conversion rates in search.

B2B services example: a marketing consultant building authority

A solo marketing consultant in Dublin wants to attract more clients online. Instead of focusing only on service pages, they launch a knowledge hub with long-form content targeting queries like “how to create a marketing plan for small businesses”.

Each article:

  • Covers one specific topic in depth

  • Uses clear headers, lists, and visuals

  • Links internally to related content

  • Demonstrates Experience, Expertise, Authoritativeness, and Trust (E-E-A-T)

Over time, this builds topical authority and earns backlinks from niche publications. As a result, the consultant’s blog posts begin to appear in featured snippets and AI Overviews, driving qualified leads.

Impact: Authority growth, search visibility, and inbound leads.

Pro Tip: Always align your SEO efforts with your business model. Local SEO tactics differ from ecommerce or B2B strategies, but all rely on clear content, technical readiness, and trust-building signals.

SEO tips by skill level

Whether you're just starting out or already know the basics, SEO offers opportunities to improve your visibility and performance, no matter your skill level. Here are practical actions you can take based on where you are in your SEO journey.

For beginners

Just starting with SEO? Focus on these quick wins to build a solid foundation:

  • Set up Google Search Console
    Verify your site and check for crawl or indexing errors using the “Pages” and “Indexing” reports.

  • Write people-first content
    Create blog posts that answer your customers’ common questions (e.g., “How much does [your service] cost in [location]?”).

  • Optimise titles and meta descriptions
    Include your target keywords naturally, and write compelling meta descriptions to increase click-through rates.

For intermediate users

Already understand the basics? These tactics help take your SEO further:

  • Add structured data (schema markup)
    Use schema.org types like Product, FAQPage, Article, or LocalBusiness to help search engines interpret your content.

  • Build topic clusters
    Create a central “pillar” page and link it to related sub-pages to reinforce topical authority and entity relevance.

  • Run a technical SEO audit
    Use tools like Screaming Frog or Sitebulb to find broken links, duplicate content, redirect issues, and crawl anomalies.

Pro Tip: SEO isn't just about what you know. It’s about consistently applying what works. Even simple fixes (like updating outdated content) can drive significant results.

How can you become an SEO specialist?

With the rise of AI-driven search, SEO has become both more strategic and more technical. Becoming an SEO specialist means developing a blend of analytical thinking, marketing creativity, and technical know-how to help websites perform well in organic search.

As search algorithms evolve, so must the skills and tools used to influence rankings effectively. Whether you're a small business owner or aspiring professional, SEO offers both a valuable skill set and a viable career path.

What skills do you need to master SEO?

To succeed as an SEO specialist in 2025, you need a well-rounded skill set that combines technical knowledge, marketing insight, and a strong grasp of how modern search works.

Key skills include:

  • Search engine fundamentals: Understand how crawling, indexing, and ranking work, and how they’ve evolved with machine learning and AI (e.g., RankBrain, MUM, AI Overviews).

  • On-page SEO: Optimise content using structured headers, semantic keywords, proper formatting, and clear user intent alignment. E-E-A-T elements like author bios and trust signals are essential.

  • Off-page SEO: Build authority through ethical link acquisition, digital PR, and brand mentions, moving beyond basic link building to relationship-based strategies.

  • Technical SEO: Know how to optimise Core Web Vitals, site architecture, crawl budgets, structured data (schema markup), JavaScript rendering, and mobile usability.

  • Entity and topical SEO: Understand how to map and build topical authority using entity-driven strategies. Use knowledge graphs and structured content clusters to establish subject relevance.

  • Content strategy: Write or guide creation of content that solves problems, matches user search intent, and ranks well in both traditional and AI-generated search results.

  • Analytics and reporting: Use tools like Google Analytics 4, Looker Studio, and Google Search Console to measure performance, spot issues, and report on ROI.

  • Adaptability and trend awareness: Stay updated on algorithm changes, AI integration in search, and emerging search behaviours (e.g., voice, visual, multimodal).

Soft skills like problem-solving, communication, project management, and collaboration with developers and writers are just as important as technical ability.

Pro Tip: Invest in learning schema markup and log file analysis, two underused areas that can significantly boost visibility, especially in competitive industries.

How much can you earn as an SEO professional?

SEO is a high-demand skill globally, with increasing opportunities for remote and freelance work.

In Ireland, SEO specialists typically earn between €30,000 and €60,000 annually, depending on experience, specialisation (technical, content, local, ecommerce), and location. Senior roles or consultants with proven results can command €70,000+.

Globally, skilled SEO professionals can earn $60,000 to $100,000+, especially those who:

  • Deliver measurable organic growth

  • Specialise in technical SEO or enterprise-level SEO

  • Consult for ecommerce, SaaS, or high-competition industries

Small business owners who invest in building SEO skills often see significant ROI, both through reduced marketing spend and increased visibility.

What are the top SEO tools for beginners and pros?

The modern SEO stack includes both foundational tools and advanced platforms that assist in technical analysis, content strategy, and competitive research.

Here are essential SEO tools to develop expertise in:

  • Google Search Console: Monitor crawling, indexing, keyword rankings, and technical issues.

  • Google Analytics 4: Understand how users interact with your site and track SEO-driven conversions.

  • SEMrush / Ahrefs: Comprehensive platforms for keyword research, backlink analysis, competitive insights, content gap identification, and visibility tracking.

  • Screaming Frog SEO Spider: Conduct technical audits by crawling your site like a search engine would.

  • Yoast SEO / RankMath (for WordPress): On-page guidance, schema markup, meta control, and readability suggestions.

  • Google Trends: Track search interest and keyword seasonality to guide content strategy.

  • Surfer SEO / Clearscope: Optimise content to match top-ranking results using semantic and NLP analysis.

  • Ubersuggest: A user-friendly and budget-friendly keyword and content idea tool for beginners.

  • Looker Studio: Build dashboards that combine SEO data from multiple sources for reporting and visualisation.

Familiarity with these tools helps you operate efficiently, make informed decisions, and demonstrate impact through data.

Recommended SEO tools (and how to use them)

SEO can feel overwhelming without the right tools. The good news is that many platforms make it easier to find opportunities, monitor progress, and fix issues. Here’s a breakdown of the most useful SEO tools and exactly how to use them in practice.

Google Search Console (Free)

Use case: Monitoring indexing and site health

  • Go to the “Pages” tab to see which URLs are not indexed.

  • Click “Inspect URL” on any page to check crawl status, coverage issues, and last crawl date.

  • Use the “Performance” report to monitor impressions, clicks, and average rankings.

Why it matters: If Google can’t index your page, it will never rank. This should be your first check.

SEMrush (Paid)

Use case: Keyword research & competitive analysis

  • Enter your domain in “Domain Overview” to see top-ranking keywords.

  • Use the “Keyword Magic Tool” to check keyword difficulty and prioritise terms with strong search volume but lower competition.

  • Track keyword rankings over time to measure SEO success.

Why it matters: Helps you focus efforts on achievable, high-value keywords instead of chasing impossible ones.

Screaming Frog SEO Spider (Free/Paid)

Use case: Technical site audits

  • Crawl your website and sort by response code to find broken links (404 errors).

  • Export errors into a spreadsheet and fix or redirect them.

  • Identify missing metadata, duplicate content, or redirect chains.

Why it matters: A technically healthy site ensures search engines can crawl and index efficiently.

Ahrefs (Paid)

Use case: Backlink and content performance analysis

  • In “Site Explorer”, check your “Top Pages” report to see which URLs bring the most traffic.

  • Expand these top-performing pages with updated data, new visuals, or FAQs.

  • Use the “Backlink Profile” to identify which sites are linking to you (or competitors).

Why it matters: Content that’s already ranking can often be made even stronger with updates and links.

Yoast SEO (Free/Paid, WordPress Plugin)

Use case: On-page optimisation for WordPress sites

  • Add focus keywords and let Yoast give real-time feedback on keyword placement.

  • Optimise title tags and meta descriptions using Yoast’s snippet preview.

  • Improve readability with Yoast’s in-editor suggestions.

Why it matters: Ensures every blog post or page is well-optimised before publishing.

Using these tools consistently gives you data-driven insights into your SEO performance and clear actions to improve rankings.

SEO is no longer just about ranking for keywords. It’s about connecting with users, proving value to search engines, and staying relevant in a fast-changing digital landscape. Learning SEO today means preparing for a search future shaped by AI, user experience, and trust.

How has SEO evolved with AI and modern marketing?

SEO has dramatically evolved over the last two decades, from keyword stuffing and link schemes to entity optimisation, user intent alignment, and AI-driven discovery. Today, effective SEO isn’t just about search engines. It’s about delivering value to users across multiple platforms, formats, and devices.

Understanding how SEO has changed can help you build a future-proof strategy that adapts to what comes next.

Pro Tip: Optimise your content for both humans and machines by using semantic HTML, rich media, and clear headings. Structured content is more likely to be cited in AI answers.

How is AI changing the way search engines work?

Artificial Intelligence has fundamentally reshaped how search engines work and how SEO is practiced.

In 2025, AI plays a key role in:

  • Understanding content at a deeper, semantic level: not just keywords, but intent, context, and topical authority.

  • Interpreting complex queries using models like Google’s MUM (Multitask Unified Model) and Gemini, which analyse text, images, and video together.

  • Generating answers via features like AI Overviews in Google or AI-generated snippets in Bing and Perplexity. These pull from high-quality sources that are clear, credible, and well-structured.

For SEO practitioners, AI has brought major shifts:

  • Content creation and optimisation are now aided by AI tools that analyse top-ranking pages, suggest content improvements, and ensure semantic completeness.

  • Entity-based SEO is more important than ever. Search engines now recognise and rank content based on how well it aligns with known entities (people, brands, topics).

  • Personalisation and real-time adaptation are on the rise. AI models factor in user context, behaviour, and device type, so rankings can vary more than ever before.

Modern SEO requires optimising not just for keywords, but for natural language, contextual relevance, and user satisfaction signals. AI also makes it easier for small business owners to scale SEO efforts with smarter tools and automations.

How can you align SEO with your broader marketing efforts?

Today, SEO is not a standalone discipline. It’s a central pillar of modern digital marketing.

To succeed, SEO must integrate with:

  • Content marketing: Create in-depth, useful content that ranks well and serves the entire funnel (awareness, consideration, conversion). Think in terms of topic clusters and content hubs.

  • Brand and PR strategies: Authority is built through mentions, links, and reputation, which often come from media coverage, influencer partnerships, and thought leadership.

  • Social media: While not a direct ranking factor, social sharing can drive traffic, backlinks, and engagement, indirectly boosting rankings.

  • Email and lifecycle marketing: SEO attracts new users, and lifecycle channels retain and convert them. Together, they maximise ROI.

  • Paid media: Insights from SEO (high-converting keywords, top content) can inform paid search and social campaigns. PPC data can also guide SEO prioritisation.

  • UX and conversion rate optimisation (CRO): SEO doesn’t stop at the click. A page that ranks but doesn’t convert is a missed opportunity. Seamless, mobile-first design and clear CTAs are essential.

Also, SEO now extends beyond traditional web results:

Blending SEO with your full marketing strategy ensures that visibility translates into business results, not just rankings.

In summary, the evolution of SEO is defined by its shift from technical hacks to strategic alignment with content quality, user intent, and AI understanding. Staying effective means staying adaptable and integrating SEO across every channel your audience touches.

What’s the future of SEO and how Can you stay ahead?

SEO remains one of the most powerful digital marketing channels, helping businesses of all sizes improve their visibility, attract organic traffic, and grow sustainably.

But how SEO works has evolved. In 2025, it's no longer just about keywords or backlinks. It's about understanding how modern search engines interpret content through AI, how they reward E-E-A-T, and how they surface results that meet user intent across formats and platforms.

With the right strategy in place, built on technical foundations, quality content, and constant refinement, you can:

  • Earn a lasting presence in search results (including AI-generated answers)

  • Build topical authority in your niche

  • Attract more qualified traffic that converts into customers

Remember: SEO is not a one-time effort. Algorithms evolve, competition increases, and user behaviours shift. Staying ahead means:

  • Tracking performance and user behaviour

  • Updating and expanding your content

  • Responding to new formats (like AI Overviews or voice search)

  • Continuing to learn and adapt

Stay informed, stay helpful, and stay optimised.

Pro Tip: SEO is a long game. Commit to consistent effort, regular updates, and aligning with user intent. The compounding results will pay off over time.

FAQs about how SEO works

How does SEO work step by step?

Here’s a simplified breakdown:

  1. Crawling – Search engines use bots to discover and scan your web pages.

  2. Indexing – Content is analysed and stored in a searchable index.

  3. Ranking – Algorithms assess how well your content matches a query using hundreds of signals (e.g., relevance, E-E-A-T, speed).

  4. Serving – Results are displayed to the user, sometimes with enhancements like AI Overviews or featured snippets.

  5. Feedback loop – User behaviour (clicks, bounce rates) can influence future rankings.

How does SEO work with examples?

Example: A plumbing company in Dublin creates a guide titled “How to Unblock a Sink.” The post uses relevant keywords, internal links, schema markup, and loads quickly on mobile. Other local blogs link to it. Google crawls and indexes it, and because it answers the query clearly and gets engagement, it appears in the top 3 results and may even be featured in an AI Overview. This is SEO in action.

How do SERPs (Search Engine Results Pages) relate to SEO?

SERPs are the pages search engines display in response to a query. SEO aims to improve your content’s position on these pages. The higher and more prominently your page appears (e.g., featured snippets, AI Overviews), the more visibility and traffic you can generate.

Can you explain what is meant by 'on-page' and 'off-page' SEO?

  • On-page SEO involves optimising the elements within your website like content, metadata, internal links, and user experience—to help search engines understand and rank your pages.

  • Off-page SEO refers to actions taken outside your site, like earning backlinks, digital PR, and brand mentions that boost your authority and trustworthiness.

Is understanding both on-page and off-page SEO important for effective optimisation?

Absolutely. On-page SEO ensures your content is relevant and crawlable, while off-page SEO builds the authority needed to compete in search rankings. A balanced strategy is essential, especially as search engines increasingly rely on multiple signals to evaluate content.

What is the 80/20 rule for SEO?

The 80/20 rule suggests that 80% of your SEO results come from 20% of your efforts. This typically refers to:

  • A small set of high-performing pages driving most of your organic traffic.

  • A few strong backlinks having disproportionate impact on authority.

  • Focusing on user-intent and content quality yielding most of the ranking improvements.

Knowing where to focus that “20%” is what separates good SEO from wasted effort.

What are the 4 types of SEO?

  1. On-page SEO – Optimising content, HTML, and site architecture.

  2. Off-page SEO – Building authority through backlinks and brand signals.

  3. Technical SEO – Ensuring site health, speed, mobile usability, crawlability, and structured data.

  4. Local SEO – Optimising for location-based searches (e.g., “near me” queries), Google Business Profile, and map pack rankings.

Some also include content SEO and ecommerce SEO as subtypes.

About the author

Alessandro Boscolo Conway — Hello Digital

I'm a Dublin-based freelance SEO and digital marketing consultant with over 20 years of experience, including time on Google Ireland’s Search Quality team. I run Hello Digital, a consultancy that helps startups and small businesses across Ireland grow online through clear strategy, expert delivery, and practical support.

I've worked with over 50 Irish companies to improve their visibility, generate better leads, and grow sustainably through SEO and digital marketing. I'm a certified Google Partner and a trusted advisor to e-commerce brands, local services, and fast-growing startups.

  • Based in Dublin, 20+ years of experience

  • Former Googler, certified Google Partner, SEO strategist, and performance marketer

  • Trusted by 50+ Irish startups, e-commerce brands, and local businesses

  • Learn more about Hello Digital

Ready to make SEO work for your business?

Understanding how SEO works is the first step, implementing it effectively is where the real results come in. Whether you're running a local shop in Cork, managing an ecommerce brand, or building a service-based business, applying the right SEO strategies can transform your visibility and growth.

If you're unsure how to optimise your site, track performance, or get your content ranking in Google and AI Overviews, expert guidance can help you move forward with clarity and confidence.

Need help building an SEO strategy that works for your business?
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