This blip is not on the current edition of the Radar. If it was on one of the last few editions it is likely that it is still relevant. If the blip is older it might no longer be relevant and our assessment might be different today. Unfortunately, we simply don't have the bandwidth to continuously review blips from previous editions of the RadarUnderstand more
One style of virtualization that is particularly attractive for SaaS and PaaS implementations is the virtual container. Linux containers such as OpenVZ provide the isolation and management benefits of a virtual machine without the overhead usually associated with general-purpose virtualization. In the container model, the guest OS is limited to being the same as the underlying host OS, but that is not a serious limitation for many cloud applications.