The new Windows Azure Portal looks great, but has moved things around a bit. This post serves as note to self and others:

How do I set a custom domain name for blob/ table/ queue?

  1. Go to the new portal https://manage.windowsazure.com/
  2. Click the "Storage" item on the left (icon reminiscent of a table or spreadsheet)
  3. Click on the one of your storage items for which you want to create a custom domain
  4. Click the "configure" tab (you are in "dashboard" by default)
  5. Click the "manage domain" icon on the bottom action bar (look all the way at the bottom between "manage keys" and "delete")
  6. Enter the full domain name you want to have point to the storage "bob.mydomain.com" (assuming you own mydomain.com)
  7. Set up a CNAME record in your DNS server for the domain you own as instructed
  8. Validate the CNAME entry (may need a bit of time to propagate, so let it.

Steps 6-8 described here: http://www.windowsazure.com/en-us/develop/net/common-tasks/custom-dns/