"There are hints the attack impacts common virtualization environments including Amazon EC2 and Google Compute Engine."
In addition, apparently both Microsoft Azure and Amazon Web Services have scheduled maintenance that will take place over the next week, although there is no detailed explanation for the downtime. However, rampant speculation suggests that the maintenance could be to put the software fixes in place for this specific Intel CPU hardware bug. Literally, in some cases, it appears operating systems will need to be overhauled to deal with the issue.
Read more at HotHardware
The shear impact of this flaw is unimaginable.