混合雲環境運算結合私有雲與公有雲的系統優點，將有效改善資訊系統建置與管理成本、降低風險、增加彈性，是資訊架構優化的重要議題。本研究目的是以服務導向理論為架構基礎，探究大學的資訊系統環境如何移轉至混合雲架構上，並提出移轉的規劃設計。研究個案以具備龐大規模的私有雲，系統串聯複雜，其學生數量眾多的T大學為觀察對象，收集其服務導向架構基礎的數據。

本論文的貢獻為透過雲端運算的說明，引進服務導向架構(SOA)的概念，藉由統一塑模語言(UML)的方式呈現架構的元件連結，找到服務的特性。本研究結果提出私有雲優化為混合雲的分析流程與策略。分析流程為:(1)大學資訊管理單位先將目前既有的系統服務依照維運成本、資訊安全、服務品質及系統架構進行分類，再根據各類型的特性，去評估是否可以進行架構移轉(2)在移轉之前，完成雲端服務媒合策略規劃，以避免移轉時的過多問題產生，影響到既有的系統服務品質。最後，藉由短期、中期、長期三項的時程安排，提出具有高度效益的服務移轉策略

本研究實務上，除了幫助管理者找到系統優化或移轉上公有雲的契機，讓使用者可以體驗新架構的效能提升。也針對資訊系統管理者提供，制定優化的雲端架構策略與對應時程之分析流程。而混合雲建置廠商藉由此分析流程，將更清楚了解如何協助客戶私有雲架構的優化，以適合組織的需求，完成混合雲的建置。這樣的評估過程，也可以做為以後資訊中心人員的移轉技術報告。

Combining the system advantages of private and public clouds in hybrid cloud environment computing can effectively improve the implementation of information systems in addition to managing cost, reducing risk, and increasing flexibility; this has become a key topic in optimizing information architectures. The purpose of this study is to theorize a service-oriented architecture to explore how university information system environments can be transferred to a hybrid cloud structure as well as propose planning and design for transfer. The subject of this case study is equipped with a large-scale private cloud and complicated linked systems where service-oriented architecture data will be collected primarily by observing students from T-University.

The contributions of this paper are based on explanations of cloud computing and the introduction of service-oriented architecture (SOA) utilizing unified modeling language (UML) methods to present links in architectural components that can identify service characteristics. The result of this study proposes an analysis procedure and strategy for optimizing private clouds into hybrid clouds. 
In practice, this study supports administrators in discovering system optimizations or opportunities for transfer onto public clouds that can allow users to experience performance increases under new architecture.

目錄
第一章 緒論	1
1.1 研究背景與動機	1
1.2 研究目的與問題	3
第二章 文獻探討	5
2.1 服務導向架構(Service-Oriented Architecture，SOA)	5
2.2 雲端運算資訊服務與大專校院應用之架構	6
2.3 雲端運算服務之架構定義	7
2.4 雲端運算管理思維之分析	8
2.5 雲端的安全架構思維與效能挑戰	13
第三章 研究方法	16
3.1 樣本	16
3.2 資料收集	22
3.3 分析工具	23
第四章 個案研究與分析	26
4.1 現況分析	26
4.2 導入混合雲之評估策略	28
4.3 分析與結果	32
第五章 結論與建議	40
參考文獻	43
一、	中文文獻	43
一、	英文文獻	44

圖目錄
圖1使用服務導向架構(SOA)機制的大學資訊系統	6
圖2混合雲的系統負載平衡設計概觀	12
圖3 T大學服務導向架構(SOA)資訊系統開發標準作業流程	17
圖4 T大學服務導向架構(SOA)-系統服務	18
圖5 T大學資訊網路規劃架構	20
圖6軟體雲使用統計分析圖(人次/月份)	21
圖7統一塑模語言(UML)-軟體雲系統虛擬桌面部署圖	24
圖8統一塑模語言(UML)-案例圖	25
圖9統一塑模語言(UML)-軟體雲系統登入活動圖	25
圖10統一塑模語言(UML)-T大學郵件系統部署圖	32
圖11 T大學郵件資訊架構系統流程圖	33
圖12統一塑模語言(UML)-軟體雲系統部署圖	36
圖13 T大學軟體雲資訊架構系統流程圖	37
圖14 T大學遠距教學平台資訊架構系統流程圖	38
表目錄
表1中華民國戶政司全球資訊網之107年各縣市人口年齡結構重要指標	1
表2從傳統架構到雲端運算的比較	11
表3全球資訊科技支出預測報告 (Billions of U.S. Dollars) (2018)	11
表4 T大學服務導向架構(SOA)-校務系統的規劃	27
表5 移轉時程規劃表	28
表6 T大學不適合移轉至公有雲環境統計表	30
表7 T大學適合移轉至公有雲環境統計表	30
表8 T大學郵件系統架構移轉至公有雲後的比較成本分析表	34

參考文獻
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