HomeDev GuideAPI Reference
Dev GuideAPI ReferenceUser GuideLegal TermsGitHubNuGetDev CommunitySubmit a ticketLog In

Tracking and cookies

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 cookie is used with tracking for Profile Store (EPiServer.Profiles.Client package) and Optimizely Visitor Intelligence.

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