**KiboNG (Formerly known as Mozu) will be transitioning the support portal to Salesforce on January 21st.**

Cookie Descriptions

The following is a list of some of the cookies you may encounter, and their basic functions. Bear in mind that cookies from Optimizely and Marketo are not functions of Mozu by default, but you may see them if your implementation includes these services.

Google Analytics

  • utma: Used to distinguish users and sessions. The cookie is created when the JavaScript library executes and no existing __utma cookies exists. The cookie is updated every time data is sent to Google Analytics.
  • utmc: Historically, this cookie operated in conjunction with the __utmb cookie to determine whether the user was in a new session (visit).
  • utmz: Stores the traffic source or campaign that explains how the user reached your site. The cookie is created when the JavaScript library executes. It is updated every time data is sent to Google Analytics.
  • ga: Used to distinguish users for Google Analytics.


  • mkto_trk: Used by Marketo to track conversions when visitors reach your site through a marketing campaign.


  • mzvr: A visitor ID tracker.
  • mzvs: A session cookie. It expires after the visitor closes the browser.
  • cookiesDirective:  Used in the UK and EU to disclose use of cookies as required by law. The script provides a mechanism for informing your visitors about how you use cookies on your website. It can also control cookie-setting JavaScripts until consent for cookies has been obtained.
  • mozucartcount: Used by the cart monitor to update the cart count number.
  • mzrt-prod: Refresh token for the current logged-in admin user. The system checks it on each call. If it expires, the visitor's session refreshes. If the expiration was long ago, the visitor is redirected to the login page.
  • sb-sf-at-prod: Site Builder storefront access token. It works with a logged-in storefront shopper.


  • optimzelyBuckets: Stores the experiments and variations that a user has been categorized into. The user will continually see the same variation for every experiment on the page. The information is in the format {"Experiment_Id":"Variation_Id"}. This cookie has an expiration time of ten years.
  • optimizelyEndUserId: Contains the end user's unique identifier. it's used by Optimizely to track information on a per-user basis. This cookie has an expiration time of ten years to ensure that an end user will continue to be properly identified and not duplicated unnecessarily even over long periods.
  • optimizelySegments: Stores JSON of the user's audience and dimension information (for example: browser, campaign, device, source type, custom dimensions, etc.).
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