Above the clouds : managing risk in the world of cloud computing PDF
Preview Above the clouds : managing risk in the world of cloud computing
Above the Clouds Managing Riskin the World ofCloud Computing Above the Clouds Managing Risk in the World of Cloud Computing KEVIN T. MCDONALD Every possible effort has been made to ensure that the information contained in this book is accurate at the time of going to press, and the publishers and the author cannot accept responsibility for any errors or omissions, however caused. No responsibility for loss or damage occasioned to any person acting, or refraining from action, as a result of the material in this publication can be accepted by the publisher or the author. Apart from any fair dealing for the purposes of research or private study, or criticism or review, as permitted under the Copyright, Designs and Patents Act 1988, this publication may only be reproduced, stored or transmitted, in any form, or by any means, with the prior permission in writing of the publisher or, in the case of reprographic reproduction, in accordance with the terms of licences issued by the Copyright Licensing Agency. Enquiries concerning reproduction outside those terms should be sent to the publishers at the following address: IT Governance Publishing IT Governance Limited Unit 3, Clive Court Bartholomew’s Walk Cambridgeshire Business Park Ely Cambridgeshire CB7 4EH United Kingdom www.itgovernance.co.uk © Kevin McDona ld 2010 The author has asserted the rights of the author under the Copyright, Designs and Patents Act, 1988, to be identified as the author of this work. First published in the United Kingdom in 2010 by IT Governance Publishing. ISBN 9781849280327 PREFACE What is Cloud Computing? Figure 1: Cloud Computing paradigm Let’s start with a definition. In the simplest, cocktailhour terms, Cloud Computing is managed, shared applications, development platforms or computing infrastructure accessible via a network such as the Internet. If you have a Gmail or Yahoo ® account, you are already using Cloud Computing. You really don’t know where your email and con tacts are stored; you access your account via the Internet or on a smartphone with the same simplicity and belief with which you turn on a light switch. Cloud Computing provides options like bandwidth and computing power on demand, with elastic abilities usually paid for as a metered service or chargeback. Your organization may already provide a service like that without calling it Cloud Computing. 5 Preface Shared service model The concept of shifting computing to a shared service provider is not new. What may be new is that the cost of Cloud Computing is falling so dramatically that considering outsourcing to the Cloud is no longer rare, and it is now accessible enough that any individual or organization can use it to their advantage. Computing as a commodity service The commoditization of software and hardware that will appear and run the same whether they are set up by in house IT staff or somewhere out in the ether are also factors. If the result is the same, the risks are more or less equivalent and the cost per transaction is dropping much faster outside the organization than when being performed inhouse, the question that should be asked is when, not why. Simplicity versus complexity Another driver is simplicity. Information technology grows more complex over time. This complexity comes at a high price. The more complex the environment, the more prone it is to failure. The more prone to failure, the more difficult and intransigent systems are to change. As our information systems have grown more complex, the data center bureaucracy has become more entrenched. We also may have lost sight of what they were supposed to accomplish for us in the first place. As a result, the percentage of work in IT that is dedicated to simply keeping the lights on and the machines humming has grown 6 Preface year to year. Meanwhile the actual amount of usable information from our “information” systems has not kept pace. Data center efficiency Studies indicate that a data center only uses, on average, 10 to 15% ofits available capacity. Byusing a sharedresource Cloud model, we can regain much of this idle capacity and lower operating costs to as much as 80% below dedicated computing models. This explains in part why so much buzz surrounds Cloud Computing. The ability to rent IT services versus buy them, run existing IT resources more efficiently and throw the resources back when they aren’t needed is very attractive in an era of increasingly tighter budgets. The way ahead If discussing factors such as reduced cost, commodity services, simplicity and efficiency, leaves you with that gnawing feeling that your organization is missing something in this complex IT arena, do not despair. It is likelyyour competitors are not performing any better. There will always likely be a gap between where you are and where yo u could be on the scale of operational efficiency. Clues to the existence and magnitude of the gap lie in the geometric growth of things like chillers and pipes, routers and firewalls with no corresponding improvement in performance. What if we could just jettison all of the details and get back to concentrating on functions and capabilities? Back to the 7 Preface days when the high priests of IT in white lab coats ushered in solutions instead of problems and fear. Cloud Computing creates the impression that we no longer need to have a handle on the details, just as we don’t need to understand electricity to use it. Cloud Computing holds the promise that we just need to step up, flip the switch and let data flow from the Cloud. Can we trade the data center utility for a utility bill? That is, of course, the promise. The question is how do we get there? 8 ABOUT THE AUTHOR Kevin T. McDonald is a senior information technology analyst and Cloud strategist for ICF International, Inc., a global consultancy based in Washington, DC. Mr McDonald is an imaginative IT security and project leader with over 25 years of industry and government experience. He specializes in infrastructure protection, cybersecurity, and business continuity planning for government and commercial clients and has published and spoken in a variety of venues. He is a member of the Tech America Cloud Computing Committee, the IACACT CrossSIG Cloud Computing in Government committee and the Cloud Security Alliance. He holds a Bachelor of Science in business administration (BSBA) Information Systems and Quantitative Analysis program from the University of Arkansas and is currently pursing graduate studies at Georgetown University in Washington, DC. Mr McDonald holds certifications from the International Information Systems Security Certification Consortium, Inc. ((ISC)² ®) as a certified information systems security professional (C ISSP), from the Systems Audit and Control Association (ISACA) as a certified information systems auditor (CISA), from the Project Management Institute as a project management professional (PMP) and is a certified business continuity professional (CBCP) from the Disaster Recovery Institute International. He lives in Falls Church, Virginia, with his wife Melanie. 9 ACKNOWLEDGEMENTS There is not enough space to thank all who have contributed to this work. Great thanks to Angela at IT Governance for her unflagging cheer and patience and to Chris Peters and Andy Robison at ICF for their early and continuous support. To my father Paul, for sharing his love of ideas, and my mother Kathleen, for sharing the wisdom to bring them into reality. And finally, for Melanie, my wife, my friend and my muse; nothing happened until she happened. Falls Church, 2009. 10
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