Area: Optimizely Tracking
Applies to versions: 1.6 and higher

Tracking and cookies

Recommended reading 

This topics describes cookies used with the Optimizely tracking functionality and Profile Store (Customer Data Platform).

Cookie usage in tracking

Cookies are issued by the client website and not Optimizely's service. IDs are stored in the respective services to map the visitor to required information for each service.

The following cookies are used with tracking for Profile Store (EPiServer.Profiles.Client package) and Optimimizely Visitor Intelligence.

Cookie Name Purpose
_madid Functionality-related. Provides a unique GUID for visitors, for Profile Store (Customer Data Platform) tracking. Persistent (1 year from creation).

See Cookies for more information about cookie usage in the Optimizely platform.

Related topics

Do you find this information helpful? Please log in to provide feedback.

Last updated: Mar 11, 2019

Recommended reading