Saas Fundamentals: A Guide to Modern Cloud Solutions
暫譯: SaaS 基礎知識：現代雲端解決方案指南

**SaaS 基礎：現代雲端解決方案指南**

*《SaaS 基礎》* 是一本清晰、直接的軟體即服務（Software as a Service, SaaS）入門書，結合了基礎技術知識與實際應用。本指南幫助您自信地評估、遷移並掌握 SaaS 的複雜性，同時突顯經過驗證的解決方案。

現代組織依賴 SaaS 進行協作、網路連接、可見性和安全性。本書解釋了 SaaS 與傳統軟體的不同之處、為何它能加速創新，以及如何評估 SaaS 產品的商業價值、可靠性、安全性和成本。您將通過已建立的企業範例學習 SaaS 在實踐中的運作，包括 Cisco Umbrella、Cisco Webex 和 Cisco ThousandEyes，展示雲端管理的網路、數位體驗監控和混合操作如何融入現代 IT 環境。

本書專為忙碌的專業人士設計，每一章獨立成篇，便於參考架構、遷移規劃、最佳實踐及受信任的 SaaS 解決方案的詳細概述。重點在於實用、無行話，並可直接應用於工作中。

無論您是從本地系統遷移還是精煉現有的雲端策略，本書都能幫助您降低風險、簡化操作並提升 SaaS 的敏捷性。

**您將學到的內容**

- SaaS 如何運作以及它與傳統軟體模型的不同之處
- 如何評估 SaaS 的商業價值、安全性、合規性和可靠性
- 如何規劃和支持 SaaS 遷移，並將干擾降至最低
- SaaS 在真實企業中的應用，包括 Cisco Webex、Cisco ThousandEyes 和 Cisco Umbrella
- 重要的 SaaS 操作概念，包括身份、整合、監控和治理
- 新興趨勢，如 AI 輔助的 SaaS、混合多雲和邊緣整合

David Hanes, CCIE No. 3491, is a principal engineer in the SaaS Support Engine at Cisco, supporting the Cisco Technical Assistance Center (TAC). Specializing in SaaS, Internet of Things (IoT), and collaboration technologies, he is focused on workflow innovation, solution architecture, and technical solution development. David is the coauthor of two books: IoT Fundamentals: Networking Technologies, Protocols, and Use Cases for the Internet of Things (Cisco Press, 2017) and Fax, Modem, and Text for IP Telephony (Cisco Press, 2008).

He has contributed to industry standards bodies such as the IETF and the SIP Forum and holds more than 50 patents, both pending and issued, across the domains of collaboration, IoT, security, AI/ML, wireless, and sustainability. David's technical leadership is recognized globally, and he has been invited to speak at numerous international conferences on collaboration and IoT topics. At Cisco Live, the company's flagship customer event, he has delivered more than 30 presentations and has earned seven Distinguished Speaker awards as well as induction into the Hall of Fame.

Since joining Cisco in 1997, David has served as a TAC engineer and team lead for both the WAN and Multiservice Voice teams, and as an escalation engineer specializing in a wide range of VoIP technologies. He has resolved complex collaboration issues for many of Cisco's largest customers worldwide. Prior to Cisco, David began his networking career as a systems engineer at Sprint, where he worked with frame relay and X.25 protocols. He holds a bachelor of science in electrical engineering from North Carolina State University.

Omar Santos is a distinguished engineer at Cisco focusing on artificial intelligence (AI) security, cybersecurity research, incident response, and vulnerability disclosure. He is the cochair of the Coalition for Secure AI (CoSAI) and a board member of the OASIS Open standards organization. Omar is also the chair of the OpenEoX and the Common Security Advisory Framework (CSAF) technical committee. His work led the creation of the CSAF ISO standard.

Omar's collaborative efforts extend to numerous organizations, including the Forum of Incident Response and Security Teams (FIRST) and the Industry Consortium for Advancement of Security on the Internet (ICASI). Omar is the cochair of the FIRST PSIRT Special Interest Group (SIG) and was the lead of the DEF CON Red Team Village for several years.

Omar is the author of more than 25 books, 20 video courses, and more than 40 academic research papers. His work in cybersecurity is also recognized through multiple granted patents. Prior to Cisco, Omar served in the United States Marines focusing on the deployment, testing, and maintenance of Command, Control, Communications, Computer, and Intelligence (C4I) systems.

Paul Giralt, CCIE No. 4793, is a distinguished engineer in the Cisco Security and Trust Organization (S&TO) focused on making Cisco's software secure; however, he spent most of his decades-long career at Cisco supporting all aspects of Cisco's collaboration portfolio, from the early days of CallManager 3.0 to modern-day, cloud-based collaboration, including Webex. He has spent much of his career helping customers accelerate the adoption of Cisco technologies and solutions, working with Cisco's largest collaboration deployments and working closely with engineering on improving product serviceability and cross-architecture product integrations. Paul has spent years designing, troubleshooting, and diagnosing issues on some of the largest and most complex Cisco collaboration deployments. His current focus is on making industry-leading changes to the security posture of Cisco products in the face of evolving threat actor sophistication leading to network infrastructure that is resilient to attacks.

Paul holds a degree in computer engineering from the University of Miami, is the author of multiple Cisco Press titles, is an IETF contributor, and holds numerous patents in collaboration and networking technologies.

Chad Patterson is a technical leader in Cisco's Customer Experience SaaS Engine, with more than 12 years of expertise in cloud collaboration technologies, SaaS security, and full-stack observability. He specializes in supporting and innovating across many Cisco products, including Webex and Telepresence, building solutions that enable customers and support teams to detect and resolve issues faster.

Chad is recognized for his contributions to technical innovation, having developed software tools and workflows that streamline troubleshooting and enhance customer outcomes. He is a prolific author of technical documents, white papers, and training materials, and has been responsible for developing and delivering curriculum to launch new collaboration and IoT support teams.

An active participant in Cisco's technical community, Chad has presented at major industry conferences, including Cisco Live and Cisco Impact, where he leverages his domain knowledge to empower customers and sales teams. He is also dedicated to mentoring colleagues and driving cross-functional innovation within Cisco's Customer Experience organization. Chad holds a bachelor of science in electrical engineering and a bachelor of science in computer engineering from North Carolina State University.

David Hanes, CCIE No. 3491 是思科 SaaS 支援引擎的首席工程師，負責支援思科技術支援中心 (TAC)。他專注於 SaaS、物聯網 (IoT) 和協作技術，致力於工作流程創新、解決方案架構和技術解決方案開發。David 是兩本書的共同作者：IoT Fundamentals: Networking Technologies, Protocols, and Use Cases for the Internet of Things（思科出版社，2017年）和 Fax, Modem, and Text for IP Telephony（思科出版社，2008年）。

他曾參與 IETF 和 SIP Forum 等行業標準組織，並在協作、物聯網、安全、人工智慧/機器學習、無線和可持續性等領域擁有超過 50 項專利（包括待審和已授權的專利）。David 的技術領導力在全球受到認可，他曾受邀在多個國際會議上發表有關協作和物聯網的主題演講。在思科年度盛會 Cisco Live 上，他發表了超過 30 場演講，並獲得七項傑出演講者獎以及入選名人堂的榮譽。

自 1997 年加入思科以來，David 擔任過 TAC 工程師和 WAN 及多服務語音團隊的團隊負責人，並作為專注於各種 VoIP 技術的升級工程師。他為思科全球最大的客戶解決了複雜的協作問題。在加入思科之前，David 在 Sprint 擔任系統工程師，開始了他的網路生涯，當時他專注於幀中繼和 X.25 協議。他擁有北卡羅來納州立大學的電機工程學士學位。

Omar Santos 是思科的傑出工程師，專注於人工智慧 (AI) 安全、網路安全研究、事件響應和漏洞披露。他是安全 AI 聯盟 (CoSAI) 的共同主席，也是 OASIS 開放標準組織的董事會成員。Omar 也是 OpenEoX 和共同安全諮詢框架 (CSAF) 技術委員會的主席。他的工作促成了 CSAF ISO 標準的創建。

Omar 的合作努力擴展到多個組織，包括事件響應和安全團隊論壇 (FIRST) 和網路安全推進產業聯盟 (ICASI)。Omar 是 FIRST PSIRT 特別興趣小組 (SIG) 的共同主席，並曾擔任 DEF CON 紅隊村的負責人多年。

Omar 是 25 本以上書籍、20 個視頻課程和 40 多篇學術研究論文的作者。他在網路安全方面的工作也通過多項授權專利得到了認可。在加入思科之前，Omar 在美國海軍陸戰隊服役，專注於指揮、控制、通信、計算機和情報 (C4I) 系統的部署、測試和維護。

Paul Giralt, CCIE No. 4793 是思科安全與信任組織 (S&TO) 的傑出工程師，專注於確保思科軟體的安全；然而，他在思科的職業生涯大部分時間都支持思科的協作產品組合的各個方面，從早期的 CallManager 3.0 到現代的雲端協作，包括 Webex。他在幫助客戶加速採用思科技術和解決方案方面投入了大量精力，與思科最大的協作部署合作，並與工程團隊密切合作以改善產品的可維護性和跨架構產品整合。Paul 在一些最大的和最複雜的思科協作部署中花費了多年時間進行設計、故障排除和問題診斷。他目前的重點是針對不斷演變的威脅行為者的複雜性，對思科產品的安全姿態進行行業領先的改變，以實現對攻擊的韌性網路基礎設施。

Paul 擁有邁阿密大學的計算機工程學位，是多本思科出版社書籍的作者，也是 IETF 的貢獻者，並在協作和網路技術方面擁有多項專利。

Chad Patterson 是思科客戶體驗 SaaS 引擎的技術領導者，擁有超過 12 年的雲端協作技術、SaaS 安全和全棧可觀察性專業知識。他專注於支援和創新多個思科產品，包括 Webex 和 Telepresence，構建解決方案以幫助客戶和支援團隊更快地檢測和解決問題。

Chad 因其對技術創新的貢獻而受到認可，他開發了簡化故障排除和增強客戶結果的軟體工具和工作流程。他是技術文件、白皮書和培訓材料的多產作者，並負責開發和提供課程以啟動新的協作和物聯網支援團隊。

作為思科技術社群的活躍參與者，Chad 曾在主要行業會議上發表演講，包括 Cisco Live 和 Cisco Impact，利用他的領域知識來賦能客戶和銷售團隊。他還致力於指導同事並推動思科客戶體驗組織內的跨功能創新。Chad 擁有北卡羅來納州立大學的電機工程學士學位和計算機工程學士學位。