Glossary
A collection of technical terms and definitions covering SEO, web development, PHP, Laravel, and WordPress.
A/B testing
split test
a11y
Web accessibility, digital accessibility
Above the Fold
ACF (Advanced Custom Fields)
Advanced Custom Fields, ACF Pro
AEO
Answer optimization, AI search optimization
Affiliate
Affiliate Marketing, Partner Program
AI
Artificial intelligence, machine intelligence
AI Agent
Autonomous AI agent, LLM agent, intelligent agent
AI Crawlers
AI scraper bots, AI training bots, AI web crawlers
AI Hallucination
model hallucination, LLM hallucination, confabulation
AIO (AI Overview)
AI Overview, AIO, Google AI Overview, Search Generative Experience, SGE
Algorithm
Alt text
Alternative text, Alt tag, Image description
AMP
Accelerated mobile pages
Anchor Text
Link text, link label, hyperlink text
Angular
Angular 2+, Angular framework
Apache HTTP Server
Apache, Apache HTTP Server, httpd
API
Application interface, software interface, web API
APM (Application Performance Monitoring)
Application Performance Management, APM monitoring
ARIA (Accessible Rich Internet Applications)
WAI-ARIA
ASCII
American Standard Code for Information Interchange
Attribution Model
Marketing Attribution, Conversion Attribution, Attribution Modeling
AVIF
AV1 Image File Format
AVO (AI Visibility Optimization)
AI Visibility Optimization
Backlink
Incoming link
Backlink analysis
Link Analysis, Link Profile Analysis
Bandwidth
data transfer, network capacity
Base64
Base-64
Black Hat SEO
Unethical SEO, Manipulative SEO
Blog
Blue-Green Deployment
Blue/Green Deployment
Bootstrap
Twitter Bootstrap
Bounce rate
Brand
Trademark, Branding
Branded keywords
Breadcrumbs
Breadcrumb Navigation, Navigation Path
Broken link
Dead Link, Link Rot
Browser
Web browser, Internet browser
Bundler
JavaScript bundler, module bundler, build tool
CAC (Customer Acquisition Cost)
Customer Acquisition Cost, CAC, Cost per Acquisition, CPA
Caching
Call to Action
CTA
Canary Release
canary deployment, canary rollout
Canonical URL
Canonical Tag, Preferred URL
Cart Abandonment
Shopping Cart Abandonment, Basket Abandonment
CDN
Content Delivery Network
Character Encoding
Text encoding, charset
Chatbot
conversational agent, virtual assistant, chat assistant, bot
Child Theme (WordPress)
Churn Rate
Attrition Rate, Customer Attrition, Logo Churn
CI/CD
CI/CD pipeline, continuous delivery pipeline, DevOps pipeline
Click-through rate
CTR
Cloaking
Cloud Hosting
Cloud-based hosting, Cloud web hosting
CLS
Cumulative Layout Shift
CMS
Content Management System
Code Splitting
bundle splitting, JS splitting
Composer
Consent Mode
Consent Mode v2, Google Consent Mode
Container Orchestration
orchestration, cloud orchestration, cluster orchestration
Containerization
container-based deployment, application containerization
Content Marketing
inbound content, content strategy
Conversion Rate
CVR, CR
Cookie Consent
Cookie Banner, Cookie Notice, Consent Banner
Cookieless Tracking
Cookie-free tracking, third-party cookieless measurement
Core Update
Google Core Update, broad core update, broad core algorithm update
CORS (Cross-Origin Resource Sharing)
Cross-Origin Resource Sharing
CPA
Cost Per Acquisition, Pay Per Action, Pay Per Acquisition
CPC
Cost Per Click
CPL
Cost Per Lead
Crawl Budget
Crawl Rate, Crawl Allocation
Crawling
Web crawling, spidering, indexing crawl
CRO
Conversion Rate Optimization
CSP
CSR
Client-Side Rendering
CSRF (Cross-Site Request Forgery)
Cross-Site Request Forgery, XSRF, Session Riding, One-Click Attack
CSS
Cascading Style Sheets
Custom Post Type (WordPress)
CPT, WordPress content type
Customer Journey
Buyer Journey, Purchase Journey, User Journey
Customer Lifetime Value
CLV, LTV, Lifetime Value, Customer LTV
CWV
Database Optimization
database performance tuning, query optimization
DC
Duplicate Content
DDoS Attack
Distributed Denial-of-Service attack, DDoS
Debugging
troubleshooting
Dedicated Server
Bare-metal server, dedicated hosting
Deployment
Release, Software release, Code release
Design System
component library, UI system, pattern library
DevOps
Disavow
link disavow, disavow links, backlink disavow
DNS
Docker
DOM
Document Object Model
Domain Authority (DA)
DA, Moz Domain Authority
Domain Rating (DR)
DR
Dwell Time
E-commerce
electronic commerce, online commerce, online retail
E-E-A-T
Edge Computing
Edge Execution, Computing at the Edge
Edge Functions
Edge Workers, Edge Middleware, Serverless Edge Functions
Email Marketing
email campaign, email advertising, email outreach
Embeddings
vector embeddings, text embeddings, semantic embeddings
Encryption
data encryption, cryptographic encryption
Engagement Rate
Engaged Session Rate
Environment Variable
env var, env variable
EXIF
Exchangeable Image File Format, image metadata
External Link
Outbound link
GA
Google Analytics
GA4 (Google Analytics 4)
Google Analytics 4, GA4
GCP
Google Cloud
GDPR
EU Privacy Law, European Data Protection Law
Generative AI
GenAI, generative artificial intelligence
GEO
AI search optimization, AIO (AI Optimization), answer engine optimization
Git
GitHub
Google Discover
Discover Feed, Google Feed
Google Merchant Center
GMC, Google Shopping Feed, Merchant Center
Google Penalty
Google manual action, algorithmic demotion, search penalty
Googlebot
Google crawler
GPT (Generative Pre-trained Transformer)
Large language model, LLM, generative AI model
Graphical User Interface
GUI
GraphQL
Grid System
layout grid, column grid, design grid
GSC
Google Search Console, Google Webmaster Tools
GTM
Google Tag Manager
Gutenberg
WordPress Block Editor, Block Editor
HCU
Heading Tags (H1–H6)
HTML headings, header tags, H tags
Headless CMS
Headless content management system, decoupled CMS, API-first CMS
Headless Commerce
Decoupled commerce, API-first commerce
Heatmap
heat map, click map, mouse tracking map
Hook (WordPress)
WordPress action, WordPress filter, action hook, filter hook
hreflang
HSTS (HTTP Strict Transport Security)
HTTP Strict Transport Security, HSTS header, Strict-Transport-Security
HTML Entities
character entities, HTML character references, HTML escape codes
HTMX
HTTP Caching
Browser Caching, Web Caching
HTTP status code
Status code, HTTP response code
HTTP/2
H2
HTTP/3
HTTP over QUIC
HTTPS
Secure HTTP, HTTP over TLS, HTTP over SSL
Hydration
client-side hydration, rehydration
i18n (Internationalization)
Internationalization, i18n
IA
IaC (Infrastructure as Code)
Infrastructure as Code, IaC
Image CDN
image delivery network, image optimization CDN
Image SEO
image optimization, visual SEO
Impression
Search impression, SERP impression
Inclusive language
Inclusive Communication
Indexing
Search engine indexing, web indexing, content indexing
INP
Internal Linking
Internal Links, Site Internal Links
IoT
Internet of Things
ISR (Incremental Static Regeneration)
Incremental Static Regeneration, ISR
Key Performance Indicator
Keyword cannibalization
Keyword Overlap, Keyword Competition
Keyword Difficulty
KD, Keyword Competition
Keyword Research
Keyword analysis, search term research, search query research
Keyword stuffing
Over-Optimization
Keywords
Search Terms, Search Queries
Knowledge Graph
Kubernetes
K8s
l10n (Localization)
Localization, l10n
Landing Page
lead capture page, destination page
Laravel
Latency
network latency, request latency
Lazy Loading
deferred loading, on-demand loading
LCP
Lead Generation
lead gen, demand generation
Link farming
Link Network, Link Scheme
Link juice
Linting
static code analysis, static analysis
LLM
Large Language Model
LLMO
Large Language Model Optimization
Load Balancer
Traffic Load Balancer, Network Load Balancer
Local SEO
local search optimization, local search marketing
Long-tail Keywords
long-tail search queries, long-tail search terms
Lossless Compression
lossless encoding, lossless image compression
Lossy Compression
lossy encoding, destructive compression
LSP
Malware
malicious software
Manual Action
Manual Penalty, Google Manual Action
Markdown
lightweight markup language, MD
Marketing Funnel
Conversion Funnel, Sales Funnel, Purchase Funnel
MCP
Meta Description
meta description tag, description meta tag
Meta tags
Microservices
microservice architecture, service-oriented architecture
Minification
code minification, JS minification, CSS minification
Mobile-First
Mobile-first design, mobile-first development, mobile-first approach
Monitoring
application monitoring, system monitoring, infrastructure monitoring
Monolith
monolithic architecture, monolithic application, monolithic software
Multimodal AI
multimodal model, multimodal system
MVC
MVC architecture
OAuth
Open Authorization, OAuth 2.0
Object Caching
persistent object cache, server-side object cache
Observability
system observability, software observability
Off-page SEO
Off-site SEO, external SEO
On-page SEO
On-site SEO, on-page optimization, page-level SEO
Open Source
Public source code, Free software, Collaboration software
Organic Traffic
Unpaid traffic, natural search traffic, SEO traffic
ORM (Object-Relational Mapping)
Object-Relational Mapper, ORM framework, ORM library
OWASP
Open Web Application Security Project
PAA
People Also Ask
Page Builder
visual page builder, drag-and-drop builder, WordPress builder plugin
PageRank
PR, Toolbar PageRank, link equity algorithm
PageSpeed Insights
PSI
Paid Search
PPC, Pay-Per-Click, Search Advertising, Paid Search Advertising
Parasite SEO
parasite hosting, third-party SEO
Passkeys
Passwordless authentication, FIDO2 credentials, WebAuthn credentials
Payment Gateway
payment processor, online payment gateway
Penetration Testing
Pen Test, Pen Testing, Ethical Hacking
Permalink
Permanent URL, Permanent link
Phishing
phishing attack, phishing scam
PHP
PHP: Hypertext Preprocessor
Plugin
extension, add-on, module
Pogo-Sticking
PPC
Pay Per Click
Product Feed
Shopping feed, data feed, product data feed, merchant feed
Programmatic SEO
pSEO, scaled SEO, automated SEO
Prompt Engineering
prompt design, prompt crafting
Prototype
interactive prototype, design prototype, clickable prototype
PWA
Progressive Web App
Python
RAG
Retrieval-augmented inference, knowledge-augmented generation
Ranking Factor
React
ReactJS, React.js
Redirect Chain
redirect loop (partial), chained redirects
Redis
Redis Object Cache, Remote Dictionary Server
RegEx (Regular Expression)
RegEx, RegExp, Regular Expression, Rational Expression
Remarketing
Retargeting
Responsive Design
Responsive Web Design, RWD, Adaptive Web Design
Responsive Images
adaptive images
REST API
RESTful API, RESTful web service, REST web API
Retargeting
Remarketing
Reverse Proxy
Rich Results
Rich Snippets, Enhanced Search Results
RLHF (Reinforcement Learning from Human Feedback)
Reinforcement Learning from Human Preferences, RLHF
ROAS
Return on Ad Spend
Robots.txt
Robots Exclusion Standard, Robots Exclusion Protocol
ROI
Return on Investment
Rollback
revert, deployment revert
RSS
Really Simple Syndication, Web Feed
SaaS
Software as a Service
Sass
SCSS, Syntactically Awesome Stylesheets
SCSS
Sassy CSS
Search Intent
User Intent, Query Intent, Searcher Intent
Search Intent
User Intent, Keyword Intent, Query Intent
Semantic HTML
semantic markup, meaningful HTML
SEO
Search Engine Optimization, Search engine optimization, Organic search
SERP
Search results page, search results, results page
SERP Features
rich results, enhanced search results, search features
Server-side Tracking
Server-side tagging, SST
Serverless
Functions-as-a-Service, FaaS, serverless computing
SFTP
Secure File Transfer Protocol, SSH file transfer protocol, encrypted file transfer protocol
SGE
Shopify
Shortcode (WordPress)
WordPress tag, shortcode tag
SKU
Stock Keeping Unit
SPA
Single Page Application
Spambot
Spam robot
SQL
Structured Query Language, query language
SQL Injection
SQLi, SQL Injection Attack
SSG (Static Site Generation)
Static Site Generation, SSG
SSH
Secure Shell, Terminal
SSL
Secure Sockets Layer, TLS, Transport Layer Security
SSR
Structured data
Schema markup, rich snippets, structured content
Svelte
SVG (Scalable Vector Graphics)
Scalable Vector Graphics
SXO (Search Experience Optimization)
Search Experience Optimisation
Tailwind CSS
Technical SEO
Technical Search Engine Optimization, on-site technical optimization
Terraform
Thin content
Time to first byte
TTFB, Server Response Time
Title Tag
page title, HTML title element, SEO title
TLD
Top-Level Domain, Domain Extension
TLS
Transport Layer Security
Token
Topical authority
Transformer
Transformer architecture, Transformer model
Tree Shaking
dead code elimination
TypeScript
TS
Typography
typesetting, type design
UI
User Interface
Unicode
Universal Character Set, UCS
UPC
Universal Product Code
Uptime
availability, server availability
URI (Uniform Resource Identifier)
Uniform Resource Identifier
URL (Uniform Resource Locator)
web address, link
URL Encoding
Percent Encoding, Percent-Encoding
URL Slug
URL identifier, permalink slug
Usability
Ease of Use, User-Friendliness
User-generated content
UGC
USP
Unique Selling Proposition, Unique Selling Point
UTF-8
Unicode Transformation Format 8-bit, UTF8
UTM Parameters
UTM tags, UTM codes, Urchin Tracking Module parameters
UX
User Experience
Vector Database
vector store, vector search database
Version Control
Source control, Revision control, Source code management
Viewport
Virtual DOM
VDOM
Visual Search
Image search, camera search
Vite
Voice Search
Voice Search Optimisation, Voice SEO
VPS (Virtual Private Server)
Virtual Private Server, VPS hosting, virtual server
Vue.js
Vue, Vue framework
WAF (Web Application Firewall)
Web Application Firewall
WCAG (Web Content Accessibility Guidelines)
Web Content Accessibility Guidelines, WCAG
Web Components
Custom Elements, native web components
Web Hosting
website hosting, web hosting service
WebAssembly (WASM)
WASM, Web Assembly
WebP
WebSocket
WS protocol
White Hat SEO
Ethical SEO
White Space
Negative space
Wireframe
lo-fi wireframe, UX wireframe, page wireframe
WooCommerce
WordPress
WP
WordPress Multisite
WordPress Network, WP Multisite, WordPress MU
WordPress Transient
WordPress Transients API, transient cache
WP-Cron
WordPress Cron, WordPress scheduled tasks, pseudo-cron