Out of curiosity what is your business use-case?You drive traffic to different business lines?? (thats why different domains?)

assign these attributes to profile using Data Distiller - 10 profiles have attr1, 10 profiles have attr2...  and then use the Data Source condition? 

value for page view = 1 for cart object for example value of cart ...._id is self populating so you do not need to care of that. If there is an * in the element then its self populated

Assuming I want to create offer regarding the Credit Card. However based on the user credit scoring details of the offer might differ. Is it possible in the offer to personalize offer copy based on the profile attributes which tell us about credit card interest rate for the specific user?

1. I create read audience journey - merge policy for profile attributes in personalization syntax would be taken from merge policy from that segment2. Event journey - default merge policy - email default set up in AJO?

audience snapshot datasetyou mean profile snapshot dataset?

What is the difference? 

Ensure your active merge policy includes both the event dataset and lookup dataset.Lookup dataset should not be enabled for Profile therefore not visible in Merge Policy creation?

Evaluate leveraging the Edge Network, more specifically Event Forwarding, to streamline Profile Updates with the Abandoned Cart EventsTo you CRM? Currently, as a Proof of Concept (PoC), we are capturing the event to trigger a journey and using a custom action to update the Profile through the reserv...

Custom query in Query Service using SQL?