KNOWLEDGE BASE

SEO & AI Glossary

Master the language of modern search. From technical SEO to the latest in Generative AI.

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CPL (Cost Per Lead)

An advertising metric measuring the average cost to acquire one lead—a prospect who has expressed interest by completing a form or action.

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CPM (Cost Per Mille)

An advertising pricing model where advertisers pay a set rate for every 1,000 impressions their ad receives.

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CPV (Cost Per View)

An advertising pricing metric measuring the average cost an advertiser pays each time a user views a video ad.

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CRM

Customer Relationship Management — software that manages a company's interactions with current and potential customers across the full sales lifecycle.

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Call-to-Action

A prompt that encourages a user to take a specific desired action—clicking a button, filling a form, making a purchase, or scheduling a call.

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Canonical URL

The preferred version of a page URL, specified via a rel=canonical tag to consolidate ranking signals when duplicate or similar content exists.

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Case Study

A detailed account of how a customer achieved a specific result using a product or service, used as persuasive bottom-of-funnel content.

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Category Page SEO

Optimising e-commerce or content category pages to rank for broad, high-intent keywords that capture users at the consideration stage.

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Chain of Thought

A prompting and reasoning pattern that asks a language model to work through a problem step by step before giving the final answer.

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Chain-of-Thought Prompting

A prompting technique that instructs AI models to show their reasoning step by step before reaching a conclusion.

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Chrome User Experience Report

Google's public dataset of real-world performance metrics collected from opted-in Chrome users, used to power Core Web Vitals assessments in Search Console and PageSpeed Insights.

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Churn Rate

The percentage of customers or revenue lost within a given period, a critical indicator of product-market fit and retention health in subscription businesses.

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Citation Building

The process of creating and managing business listings across online directories and platforms to improve local SEO authority.

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Citation Tracking

Monitoring where and how often a brand or piece of content is cited across the web, AI systems, and social channels — a key metric for AI search visibility and brand authority.

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Citation Worthiness

A measure of how structurally and semantically suitable a piece of content is to be quoted or cited by an AI engine as a source.

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Claude (Anthropic AI)

Anthropic's family of large language models known for safety focus, long context windows, and use in enterprise AI applications.

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Claymorphism

A 3D-influenced design style featuring soft, rounded, clay-like shapes with playful color palettes and subtle drop shadows — popular on illustration-heavy marketing sites.

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Click Depth

The number of clicks required to reach a page from the website homepage, a key indicator of how easily crawlers and users can access content.

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Click-Through Rate

The percentage of users who click on a search result, ad, or link after seeing it — calculated as clicks divided by impressions.

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Click-Through Rate Optimisation (CTRO)

The practice of improving the percentage of users who click on a search listing, ad, or email by optimising titles, meta descriptions, and visual elements.

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Client Reporting

The regular communication of campaign performance data and insights to clients, typically in a dashboard or PDF report format on a monthly or quarterly cadence.

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Client-Side Rendering (CSR)

A rendering approach where the browser downloads a minimal HTML shell and uses JavaScript to build the full page after load.

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Cloaking

A black-hat SEO technique that shows different content or URLs to search engine crawlers than to human users — a violation of Google's guidelines.

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Cohort Analysis

A method of grouping users by a shared characteristic or acquisition date to compare retention, behaviour, and lifetime value over time.

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Commercial Intent

A search intent type where the user is researching options before making a purchase decision—comparing, evaluating, and investigating.

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Community Management

The practice of building, growing, and moderating an online community around a brand, product, or shared interest.

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Comparison Pages

Dedicated landing pages that compare a brand's product or service against a competitor's, targeting high-intent 'vs' and 'alternative' queries.

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Competitor Analysis

The systematic evaluation of competing brands' SEO strategies, content approaches, backlink profiles, and SERP positioning to identify opportunities and threats.

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Computer Vision

A field of AI that enables computers to interpret and understand visual information from images and video.

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Connected TV

Television content streamed over the internet via smart TVs, streaming sticks, or gaming consoles, accessed through OTT platforms and addressable to programmatic advertising.

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Consent Mode

Google's framework that adjusts how Google tags behave based on a user's cookie consent choices, using modelled data to fill gaps where consent is withheld.

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Content Audit

A systematic review of all existing website content to evaluate performance, identify gaps, and determine which pages should be updated, consolidated, or removed.

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Content Calendar

A scheduling tool that plans content creation and publication across topics, formats, and channels over a defined time period.

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Content Delivery Network (CDN)

A geographically distributed network of servers that caches and delivers web content from locations close to each user.

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Content Distribution

The process of sharing and promoting content across multiple channels to maximise its reach, engagement, and ROI.

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Content Gap Analysis

The process of identifying topics your competitors cover that you don't, revealing opportunities to create content that captures missing traffic.

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Content Hub

A centralised section of a website that organises all content on a broad topic into a structured, interlinked resource centre — also called a resource hub or learning centre.

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Content Localisation

Adapting website content to resonate with a specific locale — adjusting language, cultural references, currency, and regional keyword variants beyond simple translation.

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Content Marketing

A strategic marketing approach focused on creating and distributing valuable, relevant content to attract and retain a clearly defined audience.

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Content Marketing Funnel

A framework mapping content types to each stage of the buyer journey — top-of-funnel awareness content, mid-funnel consideration content, and bottom-of-funnel decision content.

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Content Pruning

The SEO practice of removing or consolidating low-quality, low-traffic pages to improve a site's overall quality signals and crawl efficiency.

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Content Refresh

Updating existing content with new information, improved structure, and current data to maintain or improve its search rankings.

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Content Repurposing

Adapting an existing piece of content into different formats to reach new audiences and maximise the return on content investment.

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Content Strategy

The planning, development, and management of content to achieve specific business goals across all channels and formats.

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Content Syndication

The practice of republishing content on third-party platforms or publications to reach new audiences beyond the original channel.

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Content Velocity

The rate at which a website publishes new content, often cited as a signal of site freshness and a factor in how frequently Googlebot crawls a domain.

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Context Window

The maximum amount of text—measured in tokens—that a language model can process in a single interaction.

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Conversational UI

An interface pattern built around text or voice dialogue between the user and the system — chatbots, voice assistants, AI agents, customer support widgets.

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Conversion Funnel

The stages a potential customer moves through from first contact with a brand to completing a desired action—purchase, sign-up, or enquiry.

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Conversion Rate

The percentage of visitors or sessions that complete a desired goal action — purchases, sign-ups, form submissions, or downloads.

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Conversion Rate Optimization

The systematic process of improving a website or landing page to increase the percentage of visitors who complete a desired action.

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Conversion Tracking

The implementation of measurement pixels, tags, or events that record when users complete desired actions — purchases, form fills, calls — after interacting with marketing.

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Cookie Consent

The mechanism by which websites obtain users' permission to use cookies and tracking technologies, as required by GDPR, CCPA, and similar regulations.

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Cookie Deprecation

The phase-out of third-party browser cookies used for cross-site tracking, driven by privacy regulations and browser policy changes across Chrome, Safari, and Firefox.

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Cookieless Analytics

Analytics approaches that measure website performance without relying on third-party cookies, using modelling, aggregation, or server-side methods.

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Cookieless Tracking

Measurement approaches that track user behaviour and conversions without relying on third-party cookies — including first-party data, server-side tracking, and probabilistic modelling.

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Core Web Vitals

Google's set of user experience metrics—LCP, INP, and CLS—that measure loading speed, interactivity, and visual stability.

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Core Web Vitals Tools

Software and browser utilities used to measure, diagnose, and improve Largest Contentful Paint, Interaction to Next Paint, and Cumulative Layout Shift scores.

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Cornerstone Content

The most important, comprehensive content on a website that best represents what the business does and targets primary keywords.

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Cost Per Acquisition

The total marketing spend divided by the number of new customers or conversions achieved — a key efficiency metric for paid and performance marketing campaigns.

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Crawl Budget

The number of pages Googlebot will crawl on a website within a given timeframe, determined by crawl rate and crawl demand.

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Crawl Depth

The maximum number of links Googlebot follows from the homepage to reach a given page during a single crawl session.

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Crawl Errors

Problems encountered by search engine bots when trying to access pages on a website, including 404 not found errors, 500 server errors, and redirect issues.

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Crawl Priority

The relative importance Google assigns to crawling different pages on a site — influenced by internal linking, PageRank, XML sitemaps, and update frequency.

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Crawlability

The ability of search engine bots to access, read, and navigate a website's pages and content.

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Creator Economy

The ecosystem of independent content creators who build audiences and monetise through platforms, brand deals, subscriptions, and digital products.

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Cross-Linking

Linking between two different websites that are owned or controlled by the same entity — a practice Google may treat as a link scheme if done primarily to manipulate PageRank.

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Cumulative Layout Shift

A Core Web Vital measuring the visual stability of a page — how much page elements move unexpectedly during loading.

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Custom Audiences

Ad targeting segments built from a brand's own data—website visitors, email lists, CRM records, or app users—uploaded to an ad platform.

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Customer Acquisition Cost

The total cost of acquiring a new customer, calculated by dividing total marketing and sales spend by the number of new customers acquired.

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Customer Data Platform

A platform that unifies customer data from multiple sources into a single persistent profile, accessible to other marketing tools.

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Customer Journey

The complete sequence of interactions and experiences a customer has with a brand from initial awareness through purchase and beyond.

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Customer Lifetime Value

The total revenue a business can expect to generate from a single customer relationship over the entire duration of that relationship.

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Customer Success

The business function responsible for ensuring customers achieve their desired outcomes with a product, driving retention and expansion revenue.

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Cyberpunk

A design aesthetic drawing from 1980s sci-fi futurism — neon accents on dark backgrounds, glitch effects, monospace typography, and dystopian futurism.

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