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Experience Cloud Cookies

Adobe Experience Cloud uses cookies to store a visitor ID that is used across Experience Cloud Solutions.
Cookie Name: s_ecid
Attribute
Description
Information Stored
Contains a copy of the Experience Cloud ID (ECID) or MID. The MID is stored in a key-value pair that follows this syntax, s_ecid=MCMID|<ECID>
Expiration
2 years
Usage
This cookie is set by the customer's domain after the AMCV cookie is set by the client. The purpose of this cookie is to allow persistent ID tracking in the 1^st^ party state and is used as a reference ID if the AMCV cookie has expired. Check AMCV cookie here for more details.
Location
CNAME customers only. Not applicable for 3^rd^party scenarios. Cookie is stored on your domain, the same domain used by CNAME and your Analytics image request.
Size
45 bytes
Cookie Name: AMCV_###@AdobeOrg
The Experience Platform ID Service uses JavaScript to store a unique visitor ID in an AMCV_###@AdobeOrg cookie on the domain of the current website, where ### represents a random string of characters. For example, AMCV_1FD6776A524453CC0A490D44%40AdobeOrg . See also, Cookies and the ID Service .
Attribute
Description
Information Stored
Unique visitor IDs used by Experience Cloud Solutions.
Expiration
2 years
Usage
This cookie is used to identify a unique visitor
Location
This cookie is stored at the domain of the website (not the domain of the image request).
Size
Varies, most customers can expect this cookie to be around 200 bytes in length.