Last week Gartner published a great interview with Ian Pratt, CTO of Xen, Vice President of Advanced Products at Citrix (formerly co-founder of XenSource) and Chairman of Xen.org.
During the interview Pratt answers several questions about cloud computing and next steps for virtualization. Some answers are specially interesting:
Q: How real is the vision of cloud computing for the average organization today? Are we set to see a mass migration of IT functions toward external suppliers?
A: These things never happen as the people who are selling them propose, but I think there will be a movement over time. There are already plenty of startups whose entire IT infrastructure is cloud hosted and so they don’t have any physical infrastructures. Clearly, companies such as Amazon are providing a service that is useful.
But it’s a far bigger deal to take things that are working and running well in a data center and then try to push them out into the cloud. There are obviously going to be a lot of concerns around security, and you have to do a good job of convincing people that you’re going to look after their data in a secure fashion. I think the clouds that we have today are capable of evolving to do that. We have hypervisors. We know how to do a lot of these things, and I think that kind of strong isolation will evolve and be built into these cloud computing farms over time so they can provide those kind of guarantees: You can really create virtual data centers within a cloud and have confidence your data is being looked after, both when it’s on disk and flying across the network, as well as when it’s actually sitting in memory.






