Hi Muthu,  Few other differences:Customer attributes take a few minutes to a couple of hours (depends on your file size) to upload the records Vs AAM offline data takes about 48 hours to upload and be ready for activation. So for quicker activation customer attributes is the way.For cross device sti...

You are right Matt, the alias is only relevant for setCustomerID() approach. For mbox3rdPartyId the code that Gaurav shared above is sufficient. No alias required.  Regards,Chaitanya

You still will have to use incognito and try each experience separately but something that can make that testing process slightly better is by adding some query parameters to qualify for the Experience during testing. Ex: URL contains ?testExp=B, ?testExp=C etc. for different experiences. That will ...