Ask the authors about Cloud Computing.

Cloud Computing for Dummies

CloudComputingFDCover Learn what cloud computing is and how it differs from traditional approaches. This book takes you through the options, what they can do for your company, how to choose the best approach for your business, and how to build a strategy. You'll learn about managing and securing cloud services and get down-to-earth advice about planning your move to the cloud.

Learn how to:

Understand the benefits and challenges, how to select a service, and what's involved in getting it up and running
Analyze how much a cloud data center can save your company in power, labor, property, and other expenses
Understand issues involved in cloud management and how governance is defined inside the cloud
Recognize the assorted risks and how to determine acceptable risk levels

Cloud Computing For Dummies Table Of Contents

Contents at a Glance

Part I: Introducing Cloud Computing

Chapter 1: Grasping the Fundamentals

Chapter 2: Check out Cloud Service Delivery Models

Chapter 3: Viewing the Cloud Holistically

Chapter 4: Developing Your Cloud Strategy

Part II: Understanding the Nature of the Cloud

Chapter 5: Seeing the Advantages of the Highly Scaled Data Center

Chapter 6: Comparing Technology Costs: Cloud versus

Traditional Data Center

Chapter 7: Checking the Cloud's Workload Strategy

Chapter 8: Managing Data

Chapter 9: Discovering Private and Hybrid Clouds

Cloud Computing For Dummies Read A Chapter

Chapter 12 Using Software as a Service

In This Chapter

▶ Looking at the origins of SaaS: Salesforce.com

▶ Understanding how the SaaS model works

▶ Understanding the economics and the ecosystem

"When did Software as a Service get its start?" might sound like a straightforward question, but it isn't. In one way, you could say that when timesharing systems were all the rage more than 30 years ago, all software was delivered to customers as a service. Mainframe systems were simply too expensive for most companies to buy their own systems. A couple of decades later, minicomputers, servers, and personal computers changed the dynamics of the market. Economically, it was feasible for any Tom, Dick, and Harriet to own their own systems and the software. Not all software moved to an internal model however. (Software such as ADP's payroll system, for example, remained Software as a Service.)

Definition of Cloud Computing

Cloud Computing is the next stage in evolution of the internet. The cloud in cloud computing provides the means through which everything - from computing power to computing infrastructure, applications, business processes to personnal collaboration - can be delivered to you as a service wherever and whenever you need.

Cloud Computing For Dummies

Judith Hurwitz, Robin Bloor, Marcia Kaufman, Fern Halper

Book Review

Cloud computing for dummies

It was inevitable - a "Dummies" book for the cloud

By Jon Brodkin on Mon, 11/30/09 - 6:14pm. If you're struggling to learn about cloud computing and evaluate the risks and benefits it brings to your IT operation, there is a new book for you - titled, of course, "Cloud Computing for Dummies."

Written by an experienced team of technology analysts from Hurwitz & Associates (which has also written "Dummies" books on service-oriented architecture, collaboration and other IT topics), the 300-page volume covers the basic types of cloud computing services and offers insight into how to manage and plan cloud deployments. The book is aimed both at businesspeople who want little or nothing to do with technology, and at IT professionals who are knowledgeable yet new to the cloud.

"We think that cloud computing, in all its forms, is transforming the computing landscape," the authors write. "It will change the way we deploy technology and how we think about the economics of computing."

If you're interested in getting a copy, the book is available from Amazon and other book sellers.

Rather than review the whole book, I'll just quote a few passages from Cloud Computing for Dummies to give you a sense of what it's all about.

In the first chapter "Grasping the Fundamentals," the authors note "While there are a lot of technical considerations, keep in mind the fundamental truth: Cloud computing is a business and economic model. Is cloud computing a replacement for the traditional data center? The answer is complicated. In some cases, yes; in some cases, no."

Definitions of cloud computing vary, so the Hurwitz team offers its own definition, saying "the cloud itself is a set of hardware, networks, storage, services, and interfaces that enable the delivery of computing as a service. Cloud services include the delivery of software, infrastructure, and storage over the Internet (either as separate components or a complete platform) based on user demand."

Management and security is covered, with Hurwitz recommending that customers ask questions such as "Where does your data physically live? Do you have the cloud provider's assurance that it will remain private? Does your cloud provider separate (partition) your data, applications and/or management tools from other users of its cloud services? Are there clear penalties for a data or system breach? Does the cloud provider have application level firewalls and other tools that help keep your application or code safe?"

The burden is on the customer to vet the cloud provider beforehand. A cloud vendor's "security approach may conflict with your company's rules," Hurwitz notes. "No governance body will accept the excuse that you simply didn't know how your provider protected your information."

The book concludes with some general tips, such as "Don't forget about business process. Start with the business process that you want to automate with your cloud initiatives. No matter which form of cloud you're considering, process is the building block. If you haven't figured out how business processes will be managed in this new distributed world, your business could be at risk."

Hurwitz also cautions "Don't apply the cloud to everything. Not everything belongs in a cloud. For example your data center might have a large, complex, and customized application used by a dozen people. It's critical to your business. You have no economic or business reason to move that application to the cloud. Do your homework so you have guidelines to help you determine if an application or a function belongs in the data center, a public cloud, or a private cloud."