This book gives you some insights into what it means to leverage both IaaS and PaaS in both public and private cloud  environments and how these environments work with data  center services. Companies leveraging these foundational  cloud services need to keep all the models in context with  business requirements for performance, security, and portability. This book helps put the foundational cloud services — IaaS  and PaaS into context. In addition, the topics covered in this  book are critical to the success of hybrid environments. This book is useful to many people, but we have to admit that  we did pick a segment of the world to focus on. Here’s who we  think you are: About This Book Foolish Assumptions ✓ You’re already using various forms of cloud computing  and are planning a long-term strategy. Perhaps we’re  preaching to the choir. You understand that the benefits  of using all kinds of flexible cloud computing models represent sources of sustainable competitive advantage. ✓ You’re a business leader who wants IT resources to be a  utility that’s optimized to leverage what you’ve already  paid for. You want IT to serve your business needs —  you want to be able to execute your strategy on your  timetable. You want IT to be your partner in innovating  for the future. ✓ You’re an IT leader who knows a lot about technology  but aren’t sure precisely how cloud computing — public,  private, or a combination of the two as a hybrid model — works. You need to understand how cloud computing  changes IT and what you need to do to support the business with cloud computing as an important enabler. Cloud Services For Dummies, IBM Limited Edition  2 These materials are the copyright of John Wiley & Sons, Inc. and any  dissemination, distribution, or unauthorized use is strictly prohibited.