Cookie
Cookie

Definition
A cookie is a small text file that a website uses to store and retrieve information about your current or past visits to an individual website. Cookies are stored in your web browser and are used by client-side A/B testing software to identify which variant of a design a user should be served. Cookies allow servers to aggregate requests and data for an individual visitor.
To view and edit cookies in Chrome download the Editthiscookie.com browser extension.
Resources:
Conversion marketing – Glossary of Conversion Marketing.
Over 300 tools reviewed – Digital Marketing Toolbox.
A/B testing solutions – Which A/B testing tools should you choose?