We're offering a Windows Azure platform 30-day pass, so you can put Windows Azure and SQL Azure through their paces. No credit card is required.
With the Windows Azure platform you pay only for what you use, scale up when you need capacity, and pull back when you don't. Plus, get no-cost technical support with Microsoft Platform Ready.
The easiest way to get started with Windows Azure. Includes a fixed amount of services at no cost after which you just pay at standard consumption rates.