企业云计算的时机、方式与原因

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"The Cloud at Your Service - Jothy Rosenberg & Arthur Mateos - 企业云计算的何时、如何与为何" 本书《The Cloud at Your Service》由Jothy Rosenberg和Arthur Mateos合著，旨在深入探讨企业云计算的实施策略、最佳实践以及背后的业务驱动因素。这本书的前言由Annette Thomas Manes撰写，她是一位知名的行业分析师，为读者提供了对云计算领域的独特洞察。云计算是现代信息技术领域的重要组成部分，它改变了企业和组织存储、处理和分发数据的方式。作者通过本书讨论了企业应何时考虑采用云服务，如何有效地部署和管理云资源，以及为什么在特定情况下选择云解决方案是明智的决策。书中涵盖了以下几个关键知识点： 1. **云服务模型**：介绍公有云、私有云和混合云的概念，以及它们各自的优势和适用场景。公有云通常提供成本效益高且易于扩展的服务，私有云则提供更高的数据安全性和定制化能力，而混合云则结合了两者，允许企业在保持灵活性的同时平衡安全和成本。 2. **业务驱动因素**：分析促使企业转向云服务的各种因素，如降低成本、提高效率、快速响应市场变化和创新需求等。此外，还讨论了云如何帮助企业实现敏捷性，支持远程工作和全球化团队协作。 3. **云迁移策略**：详细阐述如何规划和执行云迁移，包括评估现有IT架构、选择合适的迁移工具和方法、以及管理迁移风险。这涉及到数据迁移、应用迁移和基础设施迁移等多个层面。 4. **安全性与合规性**：在云环境中，数据安全和合规性是关键问题。书中讨论了如何确保云服务的安全性，包括加密、身份验证、访问控制和合规性标准（如GDPR、HIPAA等）的遵循。 5. **性能与可伸缩性**：探讨云如何提供弹性计算资源，以应对业务高峰或低谷时的需求变化。同时，介绍监控和优化云资源性能的最佳实践。 6. **云服务提供商的选择**：分析市场上的主要云服务提供商，如Amazon AWS、Microsoft Azure和Google Cloud Platform，以及如何根据业务需求选择合适的提供商。 7. **云治理与运营**：讨论云服务的长期管理和运营，包括成本管理、资源优化、服务级别协议（SLAs）和持续集成/持续交付（CI/CD）流程。 8. **未来趋势**：展望云计算的未来发展趋势，如边缘计算、多云策略和人工智能在云中的应用。 9. **案例研究**：书中可能包含实际企业的案例，展示他们成功实施云战略并从中受益的经验和教训。《The Cloud at Your Service》是一本面向企业决策者和技术团队的实用指南，旨在帮助他们理解和利用云技术，以实现业务的持续增长和竞争优势。

preface

Like you, we live and work in the world of computing and computers, and we track

trends and transformations as they occur. We’re old enough to have witnessed main-

frames and their “virtualization of time” model. We lived through the transition

from minicomputers to the radical new model of client-server computing. With

the same awe you had of connecting to the entire world, we witnessed the amazing

change brought on by the web.

We bring that perspective to the current transformation called cloud computing.

We’ve seen this movie before and know the danger of over-hyping something to

death. (Literally to death—the term artiﬁcial intelligence had to be permanently

put to rest after it made the cover of Time magazine.) We don’t think this is hype.

We see something different going on this time that isn’t being exaggerated out of

proportion.

We see an IT transformation that isn’t primarily technology-based as the previous

ones were. The same servers running the same operating systems supporting the same

applications are running in corporate data centers as run in the cloud. Sure, developers

have to learn a few new twists, but nothing more than they have to learn on a monthly

basis anyway. Instead of technology being the basis of the change, this time it’s mostly

about economics and business models. That’s very different, very interesting, and the

reason we think this one is bigger than anything we’ve seen before.

We understand both small startups and big corporate IT. Our careers have been

involved with both. We’ve lived in startups, and we’ve sold to and worked with large

corporate IT groups for many years. As time has gone by, the ability of large IT

organizations to change on a dime has diminished. We understand this trepidation

ACKNOWLEDGMENTS xviii

explore the emerging cloud market. Dave’s strong vision of creating a new startup that

would serve the big enterprises reﬂected far-sightedness. He had a rare amalgama-

tion of CIOs from about a dozen large enterprises. They covered the gamut in their

understanding and acceptance of cloud computing. The opportunity of interacting

with them greatly inﬂuenced my decision about what type of book was needed for the

enterprise CIO group to successfully adopt the cloud.

I would like to thank my coauthor, Arthur Mateos. Arthur was in a leadership role

at Gomez, a heavy cloud user, and interacted with real users of the cloud every day.

He and his team saw ﬁrsthand how the cloud was enabling new business models in

exciting, transformative ways. But most important, it was Arthur who provided that

extra push to make me take the plunge and agree to lead our effort to create this

much-needed book.

Emily Macel is a freelance editor whom Manning brought in to work as development

editor. It was her job to push and prod us to get chapters written, to stay on schedule,

and to write material that was coherent, complied with Manning guidelines, and was

high quality. Easy to do, I suppose, in a demanding, evil way. But Emily did it the hard

way. Thank you to Emily for her kindness, patience, support, and humor. She made the

hard work of creating a book fun.

My wife, Carole Hohl, thinks I am crazy because I always take on too much. When

I added this book to my stack, she and my daughter Joanna, who lives with us while

in graduate school, probably contemplated having me committed. Thank you, Carole

and Joanna, for being incredibly supportive even when chapter deadlines sometimes

robbed us of precious weekend time!

Arthur Mateos

There are several people I’d like to thank for helping us pull this book together.

First, I’d like to thank my former colleagues in the Emerging Technology group

at Gomez, particularly Jason DeBettencourt, Imad Mouline, and Patrick Lightbody.

In 2007, we began prototyping new SaaS products, utilizing the cloud for load-testing

internet-facing load applications. It was through this early experimentation and

commercialization of those products that I experienced ﬁrsthand the coming cloud

revolution. A special thanks to Patrick, who also pitched in by writing chapter 7, “Testing,

Deployment, and Operations in the Cloud.”

I’d also like to thank Jothy Rosenberg for agreeing to join me in this project. Jothy

had been pursuing a path parallel to mine, exploring cloud technologies with venture

investors as potential business opportunities. The book would not have become a

reality without his deep cloud expertise and boundless capacity for hard work.

Finally, I’d like to thank my wife, Grace, and our children, Arthur and Katherine, for

their love and support during the writing of this book.

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企业云计算的时机、方式与原因

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