Glossary
Key SEO, GEO, and web development terms — explained clearly and concisely.
A
A/B Test
What is an A/B test? How to test page, ad, and content variants to improve conversion rates. Learn about: marketing, conversion, A/B test.
Above the Fold
Content visible without scrolling — the most valuable real estate on a page. Understanding Above the Fold is crucial for an effective digital marketing…
AI Overviews (Google)
What are AI Overviews? How Google generates AI-powered answers in search results and how to optimize your content to appear in them.
Alt Text (Alternative Text)
What is alt text? Definition of image alternative text and its role in SEO and accessibility. Learn about: alt text, accessibility, SEO.
Anchor Text
What is anchor text? Definition of link anchor text and its role in link building and SEO. A diverse anchor text profile looks natural to Google.
Answer Engine
Answer Engine. Answer Engine — A search engine that provides direct answers (Perplexity, ChatGPT Search) instead of a list of links.
API
Application Programming Interface — an interface enabling communication between software systems and applications. A foundation of modern web development.
Attribution Model
Attribution Model. Attribution Model — A model for assigning conversions to channels: last click, first click, data-driven, linear.
AVIF
A modern image format — up to 50% smaller than WebP at the same quality. Supported in Chrome, Firefox, and Safari. Essential for Core Web Vitals.
B
Backlink
What is a backlink? Definition, the importance of inbound links in SEO, and how to acquire them. Learn about backlink, link building, SEO.
Bounce Rate
Bounce rate is the percentage of visitors who leave your site after viewing only one page. In GA4, replaced by engagement rate. Key UX and SEO metric.
Brand SERP — Search Results for Branded Queries
What is Brand SERP? How to control Google results for your company name and build brand credibility in search. Learn about: SEO, branding.
Broken Link Building
A link building strategy: find broken links on industry websites and propose your content as a valuable replacement. Ethical and effective.
Buyer Persona
Buyer Persona. Buyer Persona — A fictional profile of an ideal customer: demographics, goals, challenges, purchasing decisions.
C
CAC
Customer Acquisition Cost — the cost of acquiring one customer. The CAC-to-LTV ratio determines the profitability of each marketing channel.
Call to Action (CTA)
A call to action: a button, link, or form encouraging the user to convert. Understanding Call to Action (CTA) is crucial for an effective digital…
Canonical URL
A canonical URL is an HTML tag that tells search engines which version of a page is the original and should be indexed. Prevents duplicate content issues.
CDN
Content Delivery Network — a global network of servers delivering content from the geographically nearest point. Speeds up website loading times.
ChatGPT Search
ChatGPT's search feature that cites websites — a new traffic channel. Understanding ChatGPT Search is crucial for an effective digital marketing strategy.
Churn Rate
Churn rate — the percentage of customers who stop using your product or service in a given period. A critical SaaS metric that directly impacts revenue growth.
Citability
What is citability? How to create content that AI readily cites in its responses. Citability is one of the most important GEO factors
Click depth — what is it and how does it affect SEO?
Click depth is the number of clicks from the homepage to a given page. Learn how click distance affects crawling, indexation, and Google rankings.
Content Cluster
Content Cluster. Content Cluster — A content creation strategy: pillar page + cluster content + internal links = topical authority.
Content Gap Analysis
A content gap is the absence of content on your website about a topic that matters to your potential customers and for which your competitors rank.
Content Marketing
Content marketing is a marketing strategy that involves systematically creating and distributing valuable, relevant content to attract, engage
Content Pruning
Content Pruning. Content Pruning — Removing or consolidating weak content — improves overall site quality and crawl budget.
Content Refresh
Content Refresh. Content Refresh — Updating existing articles with new data, links, and sections — faster results than creating new ones.
Content Velocity — Content Publication Pace
What is content velocity? How the pace of content publishing affects organic traffic growth and building topical authority.
Conversion
A conversion is a desired action taken by a user on a website — purchasing a product, filling out a contact form, subscribing to a newsletter
Core Web Vitals
What are Core Web Vitals? Definition of Google's three metrics measuring page speed, responsiveness, and visual stability.
CPC (Cost Per Click) — What It Is, Formula, 2026 Benchmarks
CPC (Cost Per Click) — definition, formula, average rates in Poland and worldwide. How to lower CPC in Google Ads and Meta Ads? 2026 industry benchmarks.
CPL (Cost Per Lead) — cost of acquiring a lead
CPL (Cost Per Lead) is the cost of acquiring a single lead — a potential customer who has provided their contact details
Crawl Budget
What is crawl budget? Definition and its impact on how Google indexes your site. Crawl budget is particularly important for large websites (thousands or…
Crawlability
What is crawlability? How to ensure that search engines can find and index your website. Learn about: technical SEO, crawlability, indexing.
Crawling
Crawling is the process by which search engine bots (like Googlebot) discover and download web pages by following links across the internet.
CRO
CRO. CRO — Conversion Rate Optimization — the systematic optimization of website conversions through A/B testing, UX, and copywriting.
CTR (Click-Through Rate)
With 1,000 monthly impressions, that is a change from 40 to 90 clicks — more than doubling traffic without a change in position.
Customer journey — the customer's path
A customer journey is the full path a potential customer takes from the first contact with a brand to purchase and loyalty.
D
Data-driven marketing
Data-driven marketing is an approach where you base marketing decisions on data analysis rather than intuition or experience.
Digital PR
Digital PR. Digital PR — Acquiring links and brand mentions through media coverage: expert articles, data, research, and infographics.
Domain Authority
A Moz metric (0-100) estimating domain strength based on its link profile. Understanding Domain Authority is essential for an effective digital marketing…
Domain name
What is a domain name? Definition, types of domains, and their impact on SEO and credibility. Domain age, history, and trust influence rankings.
Domain Rating (DR)
Domain Rating (DR) is a metric created by Ahrefs that measures the strength of a domain's link profile on a scale from 0 to 100.
Duplicate content
What is duplicate content? Definition, causes, and how to avoid duplicated content in SEO. Learn about: duplicate content, technical SEO, canonical.
Dwell time — what it is and how it affects SEO
What is dwell time? How time spent on a page affects Google rankings and how to increase it. Learn about: SEO, UX, metrics.
E
E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness)
What is E-E-A-T? How to build expertise and trustworthiness signals for Google and AI. Learn about: SEO, E-E-A-T, Google.
Edge Computing
Processing data close to the user (on edge servers) for minimal latency. Understanding Edge Computing is essential for an effective digital marketing…
Email Marketing
Email Marketing. Email Marketing — Marketing through email: newsletters, sequences, and campaigns. It delivers the highest ROI of all marketing channels.
Entity SEO
What is entity SEO? How to build your brand identity in Google Knowledge Graph and AI. Learn about: SEO, entity, Knowledge Graph.
F
Facebook Pixel
Facebook Pixel. Facebook Pixel — Facebook's tracking script installed on your website — it measures conversions and enables remarketing.
Featured snippets
A featured snippet (highlighted fragment, position zero) is a block of content displayed by Google above standard organic results
First-party data — your own company data
What is first-party data? Why owned data has become the foundation of marketing after cookie deprecation and how to collect it.
Funnel
A conversion funnel maps the user journey from first contact to purchase. Understanding funnel stages helps optimize content and reduce drop-off at each step.
G
GEO (Generative Engine Optimization)
What is GEO? Definition of optimization for AI-powered generative engines — ChatGPT, Gemini, Perplexity. Learn about: GEO, AI.
GEO Optimization
As more users turn to conversational AI for answers, traditional search engine rankings are no longer the only path to visibility.
Google Ads
At ARDURA Lab, we leverage Google Ads data and insights across every project — combining paid and organic strategies for maximum impact.
Google Analytics 4
The latest version of Google Analytics — event-based tracking, cross-platform measurement, and privacy-first architecture.
Google Business Profile
Google Business Profile is the foundation of local SEO and a critical visibility channel for any business serving a specific geographic area.
Google Search Console
Google Search Console — a free tool for monitoring your site's visibility in Google search results, indexation status, errors, and keyword performance.
Google Tag Manager
Google Tag Manager — a free tool for managing tracking scripts (analytics, ads, pixels) without editing website code. Simplifies marketing implementation.
Guest Posting
At ARDURA Lab, we integrate guest posting into broader SEO strategies as one element of a diversified link building approach.
H
Headless CMS — Definition and Use Cases
A Headless CMS is a content management system where the backend layer (content management and storage) is separated from the frontend layer (content…
Heat Map
A Heat Map is a data visualization technique that uses color-coded overlays to show where users click, scroll, and focus their attention on a web page.
Hreflang
Hreflang is an HTML attribute that indicates to search engines the language and regional targeting of a web page — it is essential for multilingual SEO.
HTTPS
What is HTTPS? Definition of the secure connection protocol and its impact on SEO. Google has officially confirmed that HTTPS is a ranking factor.
I
Image SEO
Image SEO is the practice of optimizing images for search engines, covering alt text, file naming conventions, modern formats like WebP/AVIF
Impression Share
Impression share is the percentage of impressions your ad received compared to the total number of impressions it was eligible to receive.
Index Bloat — Excessive Page Indexation
What is index bloat? How an excess of low-quality pages in Google's index weakens site visibility and how to prevent it.
Indexing
What is website indexing? How Google indexes pages and why it is crucial for SEO. Indexing is one of the three stages of Google's search process:…
Indexing API
Google Indexing API allows you to notify Google directly when pages are added or removed. Faster indexing than waiting for regular crawling cycles.
Internal Linking
Internal linking connects pages within your website, distributing link equity and helping search engines understand site structure and content hierarchy.
K
Keyword Difficulty
What is keyword difficulty (KD)? How to assess ranking difficulty for a keyword and choose keywords with a chance of reaching the TOP 10.
Keyword Research
Keyword research is the process of identifying, analyzing, and prioritizing the phrases that users type into search engines.
Keywords
Keywords are words and phrases that users type into a search engine when looking for information, products, or services.
Knowledge Graph
What is Google's Knowledge Graph? How to build your brand's presence in the knowledge graph. Learn about: SEO, Knowledge Graph, entity.
KPI
KPI (Key Performance Indicator) is a measurable value that demonstrates how effectively a company is achieving its key business objectives.
L
Landing Page
A landing page is a dedicated web page designed with one specific goal — to prompt the user to take an action: submit a form, download an e-book
Lazy Loading
Lazy loading defers the loading of images and videos until they enter the viewport. Improves initial page load speed and Core Web Vitals scores.
Lead Magnet
A lead magnet is a free resource (ebook, checklist, template, webinar) offered in exchange for contact information. A key tool for B2B lead generation.
Link Building
What is link building? Definition, strategies, and the importance of building links in SEO. Learn about: link building, off-page SEO, SEO.
Link Equity — What It Is and How Authority Flows
What is link equity (link juice)? How links pass authority between pages and how to leverage it in SEO. Learn about: SEO, link building.
LLM Optimization
Optimizing content for large language models (ChatGPT, Gemini, Perplexity) — citability, source authority, and structured data for AI search visibility.
llms.txt
What is llms.txt? An information file for AI models — how to create one and why it matters for GEO. Learn about: GEO, AI, llms.txt.
Local SEO
Local SEO is the practice of optimizing a business's online presence to attract more customers from relevant local searches.
Log File Analysis
Log File Analysis is the practice of examining server access logs to understand how search engine crawlers like Googlebot interact with your website.
Long-Tail Keyword
What are long-tail keywords? Definition and their strategic importance in SEO. They account for approximately 70% of all Google searches.
LTV
Lifetime Value — the total revenue a customer generates over the entire duration of the relationship. Essential for calculating acquisition budgets.
M
Marketing Automation
Marketing automation streamlines repetitive tasks: email sequences, lead scoring, personalization and nurturing. Scales marketing without scaling headcount.
Meta Tags
Meta tags are HTML elements placed in the `<head>` section of a page that convey information about the page to search engines, browsers
Mobile-First Index
Mobile-First Indexing means that Google predominantly uses the mobile version of a website's content for indexing and ranking.
MRR
MRR. MRR — Monthly Recurring Revenue — is the predictable, recurring revenue a business earns every month. It is a key SaaS metric.
N
NAP Consistency
NAP (Name, Address, Phone) consistency across your website, Google Business Profile, and directories is essential for local SEO rankings and trust.
Next.js
A React framework for building websites and web applications: SSR, SSG, ISR, App Router. ARDURA Lab's standard. Understanding Next.
Nofollow
What is the nofollow attribute? Definition, when to use rel=nofollow, and its impact on SEO. Learn about: nofollow, link building, SEO.
O
Off-Page SEO
What is off-page SEO? Definition and strategies for building domain authority outside your website. Learn about: SEO, off-page SEO, link building.
On-Page SEO
What is on-page SEO? Definition and key elements of content and code optimization on your website. Learn about: SEO, on-page SEO, positioning.
Orphan Page — what is an orphan page
What is an orphan page? How pages without internal links affect SEO and how to fix them. Learn about: technical SEO, internal linking.
P
Page Authority
What is Page Authority (PA)? How Moz's metric evaluates the strength of a single page and how it differs from Domain Authority.
Page Experience
Page Experience is a set of Google ranking signals measuring user experience: Core Web Vitals, mobile-friendliness, HTTPS, and no intrusive interstitials.
PageSpeed
What is PageSpeed? How to measure and improve page loading speed for SEO and UX. 53% of mobile users leave a page if it takes longer than 3 seconds to…
Pagination SEO
SEO-friendly pagination ensures search engines can discover all pages in a series. Uses rel=next/prev, canonical tags, and proper internal linking.
Passage Ranking
Passage Ranking allows Google to rank specific passages within a page, not just the whole page. Rewards detailed, well-structured long-form content.
Perplexity SEO
Perplexity SEO. Perplexity SEO is the practice of optimizing content for Perplexity.ai — an AI-powered search engine that cites sources in its answers.
Pillar Page
A pillar page is a comprehensive resource (3000+ words) on a core topic that links to detailed cluster articles. The foundation of topical authority in SEO.
PPC
PPC. PPC — Pay Per Click — is an advertising model in which you pay for each click on your ad. Common PPC platforms include Google Ads and Facebook Ads.
Programmatic SEO — definition and use cases
What is programmatic SEO? How to automatically create hundreds of optimized pages targeting long-tail keywords and scale organic traffic.
PWA (Progressive Web App)
What is a PWA? How progressive web apps combine the advantages of websites and native applications. Learn about: web development, PWA, technology.
R
RAG (Retrieval-Augmented Generation)
What is RAG? How the retrieval and answer generation mechanism works in AI. RAG is the mechanism behind Perplexity, ChatGPT with Browse, Bing Copilot
React
A JavaScript library for building user interfaces, created by Meta. The base technology behind Next.js and most modern, high-performance websites.
Redirect 301
What is a 301 redirect? Definition of a permanent redirect and when to use it in SEO. Learn about: redirect 301, technical SEO, migration.
Referring Domains
Referring Domains. Referring Domains is the number of unique domains that link to your website — a key metric in link building.
Remarketing
Remarketing (retargeting) shows ads to users who previously visited your website. Higher conversion rates than cold traffic at lower cost per acquisition.
Rendering
Rendering. Rendering is the process of executing JavaScript by a browser or search engine bot — a critical factor for SPA and Next.js websites.
Responsive Design
What is responsive design? Definition of responsive web design and its importance for SEO and UX. Over 60% of internet traffic comes from mobile devices.
Rich Snippets
Rich snippets are enhanced search result fragments in Google that display additional information alongside the standard title, URL, and description.
ROAS (Return on Ad Spend)
ROAS is a key metric in performance marketing — it allows you to evaluate the profitability of Google Ads, Meta Ads, LinkedIn Ads, and other paid channels.
Robots.txt
What is robots.txt? How to properly configure the robots.txt file for SEO and AI crawlers. Learn about: technical SEO, robots.txt, crawling.
ROI
ROI. ROI — Return on Investment — measures the return on an investment. In marketing: channel revenue divided by channel cost.
S
SaaS SEO — positioning software products
What is SaaS SEO? Content-led growth strategy, comparison keywords, and product-led SEO for software companies. Learn about: SEO, SaaS, strategy.
Schema.org (Structured Data)
What is Schema.org? Definition of structured data and its impact on SEO and search results. Learn about: Schema.org, structured data, technical SEO.
Search Intent
Search intent is the goal behind a user's query in a search engine — what the user is actually looking for and what they expect after typing a phrase…
SEM
Search Engine Marketing encompasses both SEO (organic results) and PPC (paid ads). A combined SEM strategy maximizes visibility across all search results.
Semantic SEO
Semantic SEO. Semantic SEO — Content optimization focused on meaning and context, not just keywords — entities, topical coverage.
SEO (Search Engine Optimization)
The goal of SEO is to attract as much search engine traffic as possible by ranking high for keywords that potential customers are searching for.
SERP (Search Engine Results Page)
Understanding SERP structure is essential for effective SEO, as it allows you to choose the right content strategy for specific queries and maximize CTR.
Server-Side Tracking
Server-Side Tracking. Server-Side Tracking — Server-side conversion tracking instead of browser-based — bypasses ad blockers.
SGEO — Search Generative Experience Optimization
SGEO (Search Generative Experience Optimization) is an extension of GEO focused on optimization for generative search results
Sitemap XML
What is an XML sitemap? How to create a site map and submit it to Google. A sitemap is particularly important for large websites (1,000+ pages)
Skyscraper Technique
The Skyscraper Technique: find top-ranking content, create a significantly better version, then reach out to sites linking to the original. A proven link building method.
Social Media Marketing
Social media marketing — strategies, platforms (LinkedIn, Facebook, Instagram), and metrics for building brand awareness and generating leads through social channels.
Social Proof
Social proof: reviews, case studies, client logos, counters — building trust. Understanding Social Proof is essential for an effective digital marketing…
Source Authority
Source authority in the eyes of AI — citations, experts, data, E-E-A-T. Understanding Source Authority is essential for an effective digital marketing…
SSL/TLS Certificate
What is an SSL certificate? Definition, types of certificates, and why SSL is critical for SEO. HTTPS is an official Google ranking factor.
Static Site Generation (SSG) — Definition and Use Cases
Static Site Generation (SSG) is a method of building websites where all pages are generated as ready-made HTML files at build time
Structured Data
Structured Data. Structured Data — Structured data (JSON-LD, Microdata) that helps search engines understand page content and display rich snippets.
T
Tailwind CSS
Tailwind CSS. Tailwind CSS — A utility-first CSS framework — fast styling without writing custom CSS. A standard in Next.js projects.
Technical SEO
Technical SEO ensures search engines can crawl, index, and render your site efficiently. Covers site speed, schema markup, XML sitemaps, and crawl optimization.
Thin Content — Low-Quality Content in SEO
What is thin content? How low-quality content hurts Google rankings and how to identify and fix it. Learn about: SEO, content, indexing.
TOFU / MOFU / BOFU
Three marketing funnel stages: Top of Funnel (awareness), Middle (consideration), Bottom (decision). Each stage requires different content types and CTAs.
Topical Authority
What is topical authority? How to build thematic authority and dominate SEO niches. Learn about: SEO, content, topical authority.
Toxic Links
Toxic links from low-quality sites (PBNs, spam, link farms) can harm your Google rankings. Use Google's Disavow Tool to neutralize their negative impact.
TypeScript
TypeScript. TypeScript — A typed superset of JavaScript — fewer bugs, better documentation, the standard in enterprise projects.
U
URL Structure
URL Structure. URL Structure — URL address structure affecting SEO: short, descriptive, with a keyword, without parameters.
User Intent
User intent (search intent) is the purpose behind a search query: informational, navigational, transactional, or commercial. The foundation of content strategy.
UX (User Experience)
UX (User Experience) is the totality of impressions and feelings a person has when using a website, application, or digital product.
UX Writing — Writing Interface Copy
UX writing is the craft of creating text for digital interfaces — buttons, error messages, tooltips, forms, notifications, and navigation.
V
Video SEO
Video optimization: Schema.org VideoObject, thumbnails, transcripts, YouTube SEO. Understanding Video SEO is essential for an effective digital marketing…
Voice Search
What is voice search? Definition of voice search and how to optimize a website for voice queries. Learn about: voice search, SEO, AI.