Setting Analytics and Experience Cloud IDs setting-analytics-and-experience-cloud-ids
The Experience Cloud Identity Service replaces the legacy Analytics visitor ID methods.
After the ID service is implemented, this code executes before AppMeasurement. The ID service retrieves the Experience Cloud and Analytics IDs so these values are ready when AppMeasurement loads.
When AppMeasurement loads, the Experience Cloud and Analytics IDs values are requested from the ID service and are sent to data collection with each server call. Since the ID service determines the visitor ID and simply passes it to AppMeasurement, the ID service must be included and implemented on each page before your AppMeasurement JavaScript file.
Changes to the Analytics ID process section-79bb86ae63f546419bb1a7ef5e710462
The primary change when migrating to the Experience Cloud ID service is that the ID cookie is set using JavaScript, instead of in the HTTP header that is returned from the data collection web server. To understand this change, the following sections describe how cookies are set using these two methods.
HTTP Header
An HTTP response from a web server sets cookies in a browser. This is how the s_vi cookie is set.