Well, I read about Amazon's Relational Database Service with interest:

Amazon RDS gives you access to the full capabilities of a familiar MySQL database. This means the code, applications, and tools you already use today with your existing MySQL databases work seamlessly with Amazon RDS.

Web Velocity already supports MySQL as a backend, and this adds the cloud based "infinite scaling" thing into the mix. With this, it looks like you could build a massively scalable Web Velocity service - as many EC2 instances as you need, backing to MySQL in the cloud. Heck, I wonder whether this makes application level caching obsolete...

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