1 Dec. 3, 2009 COMP660L Fall 2009 HKUST Lin Gu Topics in Computer and Communication Networks: Cloud Computing

2 Do we trust the cloud?

3 Cloud and Trust Debate on the Economist: “This house believes that the cloud can't be entirely trusted” –Nearly 2,500 visitors cast their vote. –Agree with the statement? 47% Yes53% No

4 Cloud and Trust –Nearly all expect that computing will migrate online –What they differ on is how fast this shift will occur “The idea is that computing will increasingly be delivered as a service, over the internet, from vast warehouses of shared machines. … companies are also moving some of their applications into the cloud. But is this a good idea? Can providers of these computing clouds be trusted? Are these mainframes in the sky reliable enough? What happens if data get lost? What about privacy and lock-in? Will switching to another cloud be difficult?”

5 Cloud and Trust Ludwig Siegele: –“The degree of trust will, at the end of the day, decide how much of computing will move into the cloud.” –“… only a few (cloud providers) will have the necessary resources to meet the complex requirements of large organisations.”

6 Cloud and Trust Stephen Elop: –“As we move to a new paradigm, I believe strongly that the only responsible choice is to give customers the power of choice: a software plus services approach that allows customers to reflect their assessment of cloud trustworthiness in the choices they make.” –“… I believe the cloud can or ultimately will be trusted; yet I still maintain that the cloud will not trusted to be all things to all businesses.”

7 Cloud and Trust Marc Benioff: –“Simplicity plus complexity does not sound like a better deal than simplicity to me. Will services coexist with software? Sure. That is how transitions work. And as we mentioned previously, one paradigm rarely completely replaces another in technology. But roles and influence do change.” –“Client-server systems are not inherently more secure than cloud services.”

8 Cloud and Trust Audience: –“It's still very much wishful thinking at this stage to think that enterprises are going get 100% on the cloud and have such huge dependency outside of their control.” –“Would any CIO want their entire corporate accounting on some server somewhere? Today, I doubt it. They'd want that information on a tamper-proof in-house resident system.“ –“Public clouds will never be used for mission critical systems until issues with encryption and privacy can be resolved in a non-intrusive manner. Until these issues are addressed public clouds will remain consumer- centric and be less likely to be used for enterprise computing.”

9 “In many cases, trust will indeed have to be earned.”