Professional Web glossary

Definitions beginning with A

Search within this letter or use the alphabet to continue exploring the complete glossary.

Browse the glossary

Definitions beginning with A

Search within this letter or use the alphabet to continue exploring the complete glossary.

20 terms displayed

Marketing and acquisition #

A/B testing

Method comparing two variants of a page, message or journey to measure which one best achieves a goal.

Also searched as : split test test ab
Design, UX and accessibility #

Above the fold

The part of a page visible before the first scroll. It should quickly present the topic, value proposition and useful next action.

Also searched as : au-dessus de la ligne de flottaison
Marketing and acquisition #

Acquisition

All actions intended to attract new visitors, prospects or customers through search, advertising, content or partnerships.

Also searched as : traffic generation
Marketing and acquisition #

Ad blocker

Software or browser extension that blocks some or all advertising and tracking scripts.

Also searched as : bloqueur de publicités
SEO, search and visibility #

AEO

Answer Engine Optimization: organizing content to provide direct, precise answers that answer engines can easily reuse.

Also searched as : answer engine optimization
Marketing and acquisition #

Affiliate marketing

Model in which a traffic partner receives payment when a click, lead or sale meets agreed conditions.

Also searched as : affiliate marketing commission
Artificial intelligence #

AI agent

AI system able to chain steps, use tools and pursue a goal with a degree of autonomy.

Also searched as : ai agent agentic
SEO, search and visibility #

AI Overview

AI-generated summary shown in some search results, generally combining several sources and links.

Also searched as : Artificial Intelligence Overview aperçu IA
Development and code #

Algorithm

Defined sequence of instructions used to solve a problem, process data or produce a result.

Also searched as : algorithm
Design, UX and accessibility #

Alt text

Alternative text attached to an image. It describes its function or content when the image cannot be perceived or loaded.

Also searched as : attribut alt texte alternatif
Development and code #

AMP

Former accelerated mobile page format initiated by Google. Its use has declined in favor of fast conventional responsive websites.

Also searched as : accelerated mobile pages
SEO, search and visibility #

Anchor text

Clickable text of a link. It helps readers and search engines understand the link destination.

Also searched as : ancre de lien link text
Development and code #

API

Interface allowing software to exchange data or trigger functions according to documented rules.

Also searched as : application programming interface
Design, UX and accessibility #

ARIA

Set of attributes improving dynamic interface descriptions for assistive technologies when native HTML is insufficient.

Also searched as : accessible rich internet applications
Artificial intelligence #

Artificial intelligence

Methods allowing computer systems to perform tasks associated with perception, language, prediction, reasoning or decision-making.

Also searched as : ia ai artificial intelligence
Development and code #

Asynchronous

Execution mode in which an operation can continue without immediately blocking other program tasks.

Also searched as : async asynchronous
Data and measurement #

Attribution

Method assigning conversion credit across the channels and touchpoints in a journey.

Also searched as : attribution model
Marketing and acquisition #

Audience

Group of people likely to view content, use a service or receive a message.

Also searched as : target public
Security and privacy #

Authentication

Process used to verify the identity of a user, service or device.

Also searched as : authentication login
Project, product and business #

Automation

Use of rules or tools to execute repetitive tasks with less manual intervention.

Also searched as : automation workflow
Editorial method

Definitions written for people, structured for machines.

The entries are editorially reformulated in plain language, connected to stable URLs and represented with DefinedTerm structured data. They provide orientation, not a substitute for official standards, legal advice or vendor documentation.