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Topic glossary

Short, straight answers to the terms our clients meet in proposals, invoices, and error messages. Every definition is written to be quoted — by a person or an answer engine — and the library keeps growing.

146 topics and growing

Web fundamentals

DNS (Domain Name System)CDN (Content Delivery Network)Web hosting Web server API (Application Programming Interface)REST API Webhook Browser cache Cookie (HTTP cookie)PWA (Progressive Web App)SPA (Single-Page Application)

Networking & connectivity

Bandwidth Latency HTTP status codes (404, 500…)Port (network port)TCP/IP Proxy server Reverse proxy WebSocket Rate limiting localhost (127.0.0.1)Ping

Security & encryption

Encryption Hashing (cryptographic hash)Two-factor authentication (2FA)OTP (One-Time Password)Phishing Firewall WAF (Web Application Firewall)DDoS attack XSS (Cross-Site Scripting)SQL injection VPN (Virtual Private Network)

Cloud & infrastructure

Cloud computing VPS (Virtual Private Server)Serverless computing Container (Docker)Load balancer Autoscaling Infrastructure as Code (IaC)CI/CD (Continuous Integration & Delivery)Uptime & availability (the nines)Backup strategy Object storage (S3)

Data & databases

Database SQL vs NoSQL Schema (database schema)Data model Migration (database migration)Query Database index ORM (Object-Relational Mapping)Caching (server-side)ETL (data pipeline)Data retention

SEO, GEO & AEO

SEO (Search Engine Optimization)AEO (Answer Engine Optimization)GEO (Generative Engine Optimization)Structured data (JSON-LD / Schema.org)Sitemap (sitemap.xml)robots.txt Canonical URL hreflang Core Web Vitals Crawler (search bot)Prerendering IndexNow llms.txt

Software engineering

Frontend Backend Framework Version control (Git)Code review Technical debt Refactoring Unit testing Staging environment Deployment MVP (Minimum Viable Product)

Design & UX

UX (User Experience)UI (User Interface)Design system Design tokens Wireframe User flow Typography (in web design)White space (negative space)CTA (Call to Action)Dark mode Brand identity

Business systems

CRM (Customer Relationship Management)ERP (Enterprise Resource Planning)Client portal E-signature (electronic signature)Digital contract Milestone billing Multi-tenancy Business automation Single source of truth Audit trail KPI dashboard Scope creep

AI & data

Artificial intelligence (AI)Machine learning (ML)LLM (Large Language Model)Prompt (prompt engineering)Inference (AI inference)RAG (Retrieval-Augmented Generation)Chatbot (AI assistant)AI hallucination Fine-tuning Vector database Data analytics

E-commerce & payments

Payment gateway PCI compliance (PCI DSS)Checkout flow Cart abandonment GMV (Gross Merchandise Value)Marketplace (multi-vendor platform)Settlement (payouts)Chargeback Subscription model POS system (Point of Sale)Conversion rate

Mobile & apps

Native app Cross-platform app Hybrid app (web wrapper)App store (distribution)Push notification Deep link Offline-first Responsive design ASO (App Store Optimization)WebView Splash screen

Compliance & operations

GDPR (General Data Protection Regulation)Data residency Privacy policy Terms of service NDA (Non-Disclosure Agreement)IP ownership (intellectual property)SLA (Service Level Agreement)Incident response RPO & RTO (recovery objectives)Web accessibility (WCAG)Data breach