How to enable Dynamics AX for Operations in Azure

Hi:

I recently paid for a subscription in Azure. I would like to subscribe to Dynamics AX for Operations. I want to be able to do the following for a single user account:

1. CRUD for General Ledger, Chart of Accounts, AR, AP

2. Be able to create Extensions (I believe extensions is now the new method under AX 365 rather than the AOT as was in AX 2009 and 2012)

Thanks for your assistance.