Glossary A–Z

Terms starting with C

64 terms. Search all 545 terms →

Web Development

CDN

A CDN is a content delivery network that serves your site from servers near each visitor, cutting load times, easing strain, and speeding up global sites.Read definition →
Web Development

CI/CD

CI/CD is an automated pipeline that builds, tests, and deploys code changes continuously. CI/CD ships updates faster with far fewer bugs reaching users.Read definition →
Web Development

CMS

A CMS is software that lets people create and manage website content without coding. The right CMS lets your team update the site independently. The wrong one.Read definition →
Web Development

CORS

CORS is a browser rule that controls when a page can request data from a different domain. It safely enables APIs while blocking malicious cross-site calls.Read definition →
PPC

CPA

CPA is the average cost to acquire one customer or conversion from an ad campaign. It ties ad spend directly to results, so you know true cost per sale.Read definition →
PPC

CPC

CPC is the amount an advertiser pays for each click on a pay-per-click ad. Lowering CPC while holding conversions steady directly improves campaign profit.Read definition →
PPC

CPL

CPL is the average cost to generate one lead from an ad campaign. It shows what each new inquiry costs, so lead-gen budgets can be judged on real value.Read definition →
PPC

CPM

CPM is the cost an advertiser pays per thousand ad impressions. It is the standard way to price and compare awareness-focused advertising campaigns.Read definition →
Web Development

CSS

CSS is the language that controls the visual appearance and layout of web pages. It shapes the professional first impression that drives trust and sales.Read definition →
Analytics

CTR

CTR is the percentage of people who click a link, ad, or result out of those who see it. CTR reveals whether your titles, ads, and descriptions actually earn.Read definition →
Web Development

Caching

Caching stores copies of data or pages so they can be served faster on repeat requests. Caching cuts load times and server strain, boosting speed and SEO.Read definition →
PPC

Call Extension

A call extension adds a phone number or call button to a search ad, letting mobile users tap to call your business directly and driving phone leads.Read definition →
Web Design

Call to Action

A call to action is a prompt urging visitors to take a specific step. Clear, compelling CTAs turn passive readers into leads, subscribers, and buyers.Read definition →
PPC

Callout Extension

A callout extension adds short, non-clickable phrases beneath a search ad to highlight selling points like free shipping or 24/7 support and build appeal.Read definition →
SEO

Canonical Tag

A canonical tag tells search engines which version of a duplicate or similar page is the primary one. Canonical tags prevent duplicate content from diluting.Read definition →
Web Design

Carousel

A carousel is a rotating slideshow that cycles through images or cards in one space. It packs several messages into a slot, though later slides are ignored.Read definition →
AI / GEO

Chain of Thought

Chain of thought is prompting an AI to reason step by step before answering, which improves accuracy on complex problems like math and logic.Read definition →
AI / GEO

Chatbot

A chatbot is a program that holds a conversation with users through text or voice to answer questions or complete tasks. Modern ones run on AI models.Read definition →
SEO

Citation

A citation is an online mention of a business's name, address, and phone number on a directory or listing. Consistent citations boost local rankings and trust.Read definition →
PPC

Click Fraud

Click fraud is the malicious or invalid clicking of pay-per-click ads to drain budgets or inflate revenue, without any genuine interest in the offer.Read definition →
Content & Email

Click-to-Open Rate

Click-to-open rate is the percentage of people who opened an email and then clicked a link. It measures how compelling the email's content and offer were.Read definition →
SEO

Cloaking

Cloaking is the black-hat practice of showing search engines different content than human visitors see. It risks a severe Google penalty or full removal.Read definition →
Tech Stack

Cloudflare

Cloudflare is a network that speeds up, secures, and protects websites from attacks. Cloudflare improves site speed and blocks threats before they hit.Read definition →
Web Development

Code Splitting

Code splitting breaks a site's JavaScript into smaller chunks loaded only when needed. It speeds up initial load, improving both UX and rankings.Read definition →
Analytics

Cohort Analysis

Cohort analysis groups users by a shared start date or trait to compare behavior over time. It exposes retention trends that plain averages tend to conceal.Read definition →
Web Design

Color Palette

A color palette is the defined set of colors used across a brand or design. A consistent palette builds recognition and guides attention on the page.Read definition →
SEO

Commercial Investigation

Commercial investigation is a search where someone researches products before buying, like 'best CRM software.' Ranking here influences buyers as they decide.Read definition →
Web Development

Commit

A commit is a saved snapshot of code changes in version control, each with a message. Commits create a clear, reversible history of every change.Read definition →
Social Media

Community Management

Community management is actively engaging a brand's audience across social channels. It builds loyalty, answers questions, and turns followers into fans.Read definition →
Web Development

Component

A component is a self-contained, reusable piece of a user interface, like a button or card. Components let teams build interfaces faster and consistently.Read definition →
Web Design

Component Library

A component library is a shared collection of reusable interface pieces used site-wide. It keeps an interface consistent and speeds up design and development.Read definition →
Analytics

Confidence Level

Confidence level is the percentage expressing how certain you can be that a test result is reliable. It sets the bar a test must clear before you trust it.Read definition →
Analytics

Consent Mode

Consent mode is a Google framework that adjusts how tags collect data based on user consent. It helps you honor privacy laws without losing all measurement.Read definition →
Content & Email

Content Audit

A content audit is a systematic review of all a website's content to decide what to keep, improve, or remove. It sharpens quality and lifts SEO performance.Read definition →
Content & Email

Content Calendar

A content calendar is a schedule that plans what content is published, where, and when. It keeps a marketing team consistent, organized, and on strategy.Read definition →
SEO

Content Gap

A content gap is a topic your audience searches for that your site does not yet cover. Content gap analysis reveals easy ranking wins competitors are.Read definition →
Content & Email

Content Marketing

Content marketing is a strategy of creating useful content to attract and retain customers rather than pitching directly. It builds trust that drives sales.Read definition →
Content & Email

Content Pillar

A content pillar is a core topic that anchors a cluster of related content. Pillars organize your marketing around themes that build topical authority.Read definition →
SEO

Content Pruning

Content pruning is removing or improving low-value pages to strengthen a site. Pruning weak content can lift a site's overall quality signals and rankings.Read definition →
SEO

Content Refresh

A content refresh updates existing pages with current information to restore relevance. Refreshing proven content often recovers rankings faster than new posts.Read definition →
Content & Email

Content Repurposing

Content repurposing is the practice of reshaping one piece of content into new formats for different channels. It multiplies reach from work you already did.Read definition →
SEO

Content Silo

A content silo groups related pages into a clear topic structure linked together. Silos help search engines see your topical authority and rank the group.Read definition →
Tech Stack

Contentful

Contentful is a headless CMS that stores structured content centrally and delivers it through APIs. Contentful lets brands write once and publish everywhere.Read definition →
AI / GEO

Context Window

A context window is the amount of text an AI model can consider at once, measured in tokens. A bigger window lets it handle longer documents and chats.Read definition →
Web Design

Contrast Ratio

Contrast ratio measures the luminance difference between text and its background. Sufficient contrast keeps content readable and meets accessibility rules.Read definition →
AI / GEO

Conversational AI

Conversational AI is technology that lets machines understand and respond in natural human dialogue across text and voice. It powers assistants and bots.Read definition →
Analytics

Conversion Funnel

A conversion funnel is the step-by-step path a visitor takes toward an action. Mapping it reveals where prospects drop off so you can fix the weak steps.Read definition →
Analytics

Conversion Rate

Conversion rate is the percentage of visitors who complete a desired action, like a purchase or form fill.Read definition →
Content & Email

Conversion Rate Optimization

Conversion rate optimization is the practice of increasing the percentage of visitors who take a desired action. CRO turns existing traffic into more revenue.Read definition →
PPC

Conversion Tracking

Conversion tracking measures the valuable actions people take after clicking an ad, like purchases or form fills. It reveals which spend actually pays off.Read definition →
PPC

Conversion Value

Conversion value is the monetary worth assigned to a conversion in ad platforms. It lets bidding optimize for revenue instead of counting every action equally.Read definition →
Web Development

Cookie

A cookie is a small text file a website stores in your browser to remember information between visits. Cookies power logins, carts, and analytics tracking.Read definition →
Content & Email

Copywriting

Copywriting is the craft of writing persuasive text that moves a reader to act, from ads to emails to web pages. Strong copy turns interest into sales.Read definition →
SEO

Core Update

A core update is a broad change to Google's main ranking algorithm. Core updates can shift rankings sharply, rewarding quality and demoting weak pages.Read definition →
SEO

Core Web Vitals

Core Web Vitals are Google's metrics for a page's loading speed, interactivity, and visual stability.Read definition →
SEO

Cornerstone Content

Cornerstone content is a site's most important, foundational articles on its core topics.Read definition →
SEO

Crawl Budget

Crawl budget is the number of pages a search engine will crawl on your site in a given period.Read definition →
SEO

Crawl Error

A crawl error is a problem that stops a search engine from reaching a page on your site. Crawl errors block pages from being indexed and ranked in search.Read definition →
SEO

Crawlability

Crawlability is how easily search engine bots can access and navigate the pages of a website.Read definition →
Web Development

Cron Job

A cron job is a scheduled task that runs automatically at set times on a server. Cron jobs automate backups, reports, and routine site maintenance.Read definition →
SEO

Cumulative Layout Shift

Cumulative Layout Shift measures how much a page's content unexpectedly moves as it loads. A low CLS keeps pages stable, preventing misclicks and frustration.Read definition →
Analytics

Custom Dimension

A custom dimension is a user-defined attribute added to analytics to capture data the default setup misses. It tailors reports to your specific business.Read definition →
PPC

Custom Intent Audience

A custom intent audience targets people by keywords and sites that signal buying intent, reaching active researchers to lift relevance on display and video.Read definition →
Analytics

Custom Metric

A custom metric is a user-defined numeric measurement added to analytics beyond the standard set. It lets you measure what actually drives your business.Read definition →