「雲端運算」是一種概念，而非全新技術或新系統，但它將重新塑造資訊產業價值鏈的新樣貌，開啟以軟體及服務為主的競爭時代，雲端運算服務也將成為未來資訊應用的新主流。本研究針對雲端運算服務的趨勢與應用，探討使用性與使用者體驗設計相關因素，包含互動的使用性、易用性和滿意度，並進一步探討使用者的體驗感受，以提出建議改善目前雲端運算服務互動設計，提昇使用者的滿意度。
本研究包含兩部分實驗：(1) 現有的雲端運算服務互動設計調查：了解目前雲端運算服務互動設計之問題，包含操作互動設計之功能與程序、介面互動滿意度、系統使用性，並透過訪談了解使用者的需求與尋求互動設計上之建議；(2) 第二階段實驗：將前階段之實驗結果，同時整理歸納相關文獻研究，進行第二階段雲端運算服務互動設計實驗。雲端運算服務互動設計實驗採2(使用經驗高低) x3(主選單位置)雙因子實驗之方式進行。
「使用經驗高低」之變項共有兩層級：(a)使用經驗高：同時具備有智慧型裝置，包含智慧型手機與平板電腦，並持續天天使用二個月以上該作業系統，同時至少使用過一種雲端運算服務則定義為「使用經驗高」之受測者；(b)使用經驗低：沒有擁有或完全沒有使用過智慧型裝置、僅開發時使用作業系統或沒有使用過雲端運算服務之使用者則定義成「使用經驗低」之受測者。而「主選單位置」分為三層級：(1)主選單資訊在左上方：不論播放或編輯功能，主選單位置呈現於整個畫面的左上方；(2)主選單資訊在兩側：不論播放或編輯功能，主選單位置呈現於整個畫面的上方兩側；(3)主選單資訊在正上方：不論播放或編輯功能，主選單位置呈現於整個畫面的正上方。透過實驗獲得計時操作績效、系統使用性以及整體使用滿意度與使用者體驗感受之結果。
研究結果如下：(1) 現有的雲端運算服務互動設計使用性考慮仍不夠周詳；(2) 不論經驗高低，對於操作任務多數受測者都有信心可以完成任務，但遇到挫折時，使用經驗低的受測者會比使用經驗高的受測者容易產生挫敗感；但順利完成時，相對使用經驗低的受測者也容易比使用經驗高的受測者更加自信。(3) 採用「主選單在兩側」的型式較能提高操作效率；(4) 不論「使用經驗高低」皆認為「主選單在兩側」的使用性、滿意度與體驗感受最佳，甚至使用經驗低的受測者整體體驗感受高於使用經驗高的受測者；(5)「主選單在左上方」和「主選單在正上方」的選單模式比較受測者在操作過程中受到干擾。結果證實雲端運算服務互動設計兩個變數探討，在「使用經驗高低」與「主選單位置」，對於雲端運算服務互動設計的使用性與體驗感受的確有顯著影響。

"Cloud computing" is a concept, may not be a whole new technology or new system, but it will re-shape the new form of the IT industry value chain, and will open the era of competition-based software and services. Cloud computing services will also become the new mainstream for future IT applications. In this study, usability and user experience design factors pertinent to cloud computing service were explored, including interface usability, ease of use, and satisfaction rate. It is hoped that the research results can be used to help improve the current cloud computing service interactive design and enhance user satisfaction.

This study included two parts of experiment: (1)The first phase of the experiment is about cloud computing service interactive design survey: cloud computing service interactive design includes the functions and procedures of operating an interactive design, user interface satisfaction, system usability, and through interviews to understand users' needs and seek recommendations on the interactive design; (2) The second phase of the experiment is designed based on the experimental results from the previous stage, while finishing summaries from relevant literature. The experiment of cloud computing service interactive design adopted a between-subjects experimental design, i.e., a 2 (higher or lower user experience) x 3 (main menu position).

The factor of user experience has two levels: (1) Users with higher experience are related to own intelligent devices, including smart phones and tablet PCs, and continue to use them daily of more than two months; (2) Users with lower experience are related to not own or seldom use of smart devices, use only in the processing of developing an operating system, or have not used cloud computing services before. The factor of main menu position includes three levels: (1) The main menu position in the upper left: where to play or edit function, showing the location of the main menu at the top left of the entire screen; (2) The main menu information on both sides: where to play or editing function, the main menu position showing the top of both sides of the entire screen; (3) The main menu is separated on both sides: where playing or editing features, showing the location of the main menu at the whole picture just above. Users' task performance, system usability, and the overall use of satisfaction with the results of the user experience were obtained through experiments.

The generated results are as follows: (1) The existing cloud computing service interactive design usability considerations are still not comprehensive enough; (2) Regardless of user experience level, the majority of users have confidence to complete the task, but the setbacks, the user with lower experience level were prone to frustration while facing obstacles. Nonetheless, after successful completion of assigned tasks, the user with lower experience level may feel more confident than those with higher experience level. (3) The main menu located on both sides of the display can help improve operational efficiency; (4) No matter the level of experience, users feel that the main menu located on both sides of the display has the best interface usability, satisfaction, and subjective feelings, and even the user with lower experience tends to agree more than those with higher user experience; (5) The main menu located on the upper left and top positions may cause interference toward users' task performance. The results confirmed that the two variables, i.e., user experience and main menu position, addressed in this study do have a significant effect to the usability and subjective feelings of users interacting with cloud computing service.

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