A/B testing – a method in marketing research where variables in a control scenario are changed and the ensuing alternate strategies tested, in order to improve the effectiveness of the final marketing strategy.
Above the fold – the section of a Web page that is visible without scrolling.
Ad blocking – the blocking of Web advertisements, typically the image in graphical Web advertisements.
Ad space – the space on a Web page available for advertisements.
Add URL – (see Search Engine Submission)
AdSense – a contextual advertisement service provided by Google.
Advertising network – a network representing many Web sites in selling advertising, allowing advertising buyers to reach broad audiences relatively easily through run-of-category and run-of-network buys.
Affiliate – the publisher/salesperson in an affiliate marketing relationship.
Affiliate manager – a person responsible for managing an online affiliate program for an affiliate merchant.
Affiliate marketing – revenue sharing between online advertisers/merchants and online publishers/salespeople, whereby compensation is based on performance measures, typically in the form of sales, clicks, registrations, or a hybrid model.
Affiliate merchant – the advertiser in an affiliate marketing relationship.
Affiliate network – a value-added intermediary providing services, including aggregation, for affiliate merchants and affiliates.
affiliate software – software that, at a minimum, provides tracking and reporting of commission-triggering actions (sales, registrations, or clicks) from affiliate links.
ALT text – HTML attribute that provides alternative text when non-textual elements, typically images, cannot be displayed.
Animated GIF – a graphic in the GIF89a file format that creates the effect of animation by rotating through a series of static images.
Autoresponder – a program that sends an automatic form response to incoming emails.