Adobe Exam AD0-E718 Topic 2 Question 17 Discussion

By setting the same cookie domain for both websites, the customer base can be shared between both websites, as the customer will be authenticated by the same cookie across both sites. This will ensure that customers don't have to log in twice when switching between the two sites.

Setting Cookie Domain for both websites to ''.example.com'' will allow both websites to use the same customer base. This is because the cookie domain determines which websites can access the customer information stored in the cookie. By using a common domain, both websites can share the same customer cookie.See Multiple websites or stores in the Adobe Commerce Help Center1. Reference: https://experienceleague.adobe.com/docs/commerce-operations/configuration-guide/multi-sites/ms-overview.html?lang=en1