Various IDs in Adobe Analytics

Update time: October 29, 2024

Adobe uses several different methods to identify visitors on website. 

VID

The full name of VID is visitor ID.

The visitorID variable overrides all other methods of visitor identification. The visitor ID is self-defining, and s.visitor ID must be set to have a value. Set the visitor ID in the cookie in the Adobe Analytics plug-in.

Adobe advises against using VID. Use the Adobe Experience Cloud Identity Service （MDID）instead. 

Don’t use VID anymore.

Do not use it. STOP.

AID

The full name of AID is Analytics ID, which stores unique visitor ID timestamp/date stamp, cookie name is s_vi

There is no s_vi cookie before the deployment of Experience Cloud ID service.

FID

The full name of FID is Analytics Fallback ID, alternate unique visitor ID timestamp/date stamp

The browser does not accept third-party cookies and it is used when the Analytics tracking server is set as a third-party tracking server. In fact, it is used when the aid is not available.

ECID（ECID = MID = MCID）

The Adobe Experience Cloud Identity Service (ID service) provides a universal, persistent ID that identifies your visitors across all the solutions in the Experience Cloud. It can replace ID generation code for services such as Analytics, Audience Manager, Target, and other Experience Cloud solutions or features.

Experience Cloud Visitor ID is common to all Adobe products. To use this, you need to start the Experience Cloud ID Service Extension.

If you want to set ECID as eVar, read more:Set ECID to eVar in Adobe Analytics（Client-side & Server-side）

SDID

SDID= Supplemental Data ID

The SDID is a parameter used by Analytics and Target to stitch the calls together. For each page view, you should have a new SDID, Target and Analytics calls contain same SDID, This is how Analytics can later create the reports you get from A4T.

Adobe Supplemental ID is generated anytime the following criteria are in place: 

•   The visitor ID service is in implemented
•   A version of mbox.js that supports this integration is implemented.

For each page view, you should have a new SDID

Adobe ID

Adobe ID is the e-mail address you log in. It is free to register. The same Adobe ID is used to manage all Adobe plans and products associated with a single account.

Org ID

Org ID, which is the organization ID, Also called enterprise ID、IMS organization ID, is the company account name, an alphanumeric string consisting of 24 characters, followed by (and must include) @AdobeOrg

FPID

The full name of FDID is First-party device IDs, which is actually an ID managed by the user server. It is also the first-party Cookie ID.

Read more：FPID: First Party Device ID