Well, yeah, an in-memory database company is going to be underwhelmed by EC2. Their RAM pricing isn't competitive. The Amazon sweet spot tends more towards stor

Well, yeah, an in-memory database company is going to be underwhelmed by EC2. Their RAM pricing isn't competitive. The Amazon sweet spot tends more towards storage and internal I/O bandwidth. The article completely ignores this point, but if you're comparing a cloud offering to colo or building a datacenter, the extent to which the cloud system corresponds to the nature of your workload is critical. Cloud gives you one sort of flexibility (size-over-time and provisioning) and takes away another (physical architecture design).