The Azure Preview Portal now supports the automated creation of a basic or high-availability SharePoint farm in Microsoft Azure.
Setting up a farm in the basic configuration requires three servers: a domain controller, a SQL server, and a SharePoint server.
Setting up a farm in the high-availability configuration involves nine servers: two domain controllers, two SQL servers, a SQL Server quorum server, two SharePoint servers in the application tier, and two SharePoint servers in the front-end web tier.
For either of these two farms, you can specify the settings in just a few clicks, and the Azure Preview Portal does the rest.
Once the farms are built, you can access a basic team site as an Internet web client and use Central Administration to configure additional capabilities. For the details, see SharePoint Server Farm.
To see a step-by-step walkthrough, take a look at Step-by-Step: Deploy a Highly Available SharePoint Server Farm in the Cloud–in ONLY 8 Clicks!
For additional information about Windows Azure and Virtual Machines, see SharePoint on Windows Azure Virtual Machines.