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 1st-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 3rd-party scenarios. Cookie is stored on your domain, the same domain used by CNAME and your Analytics image request.

Size

45 bytes

SameSite=Lax

Cookies with this setting are only sent when the domain displayed in the URL of the browser matches the domain of the cookie. This is the new default for cookies in Chrome.

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, such as 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.

No value added. Chrome will default to Lax.

Cookies with this setting are only sent when the domain displayed in the URL of the browser matches the domain of the cookie. This is the new default for cookies in Chrome.

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