啟動雲端 轉變世界 2006/8Google CEO Eric Schmidt 在”搜尋引擎策略論壇”中首度用” 雲端 ”描述 Google 的伺服器群與服務 2007/10 Microsoft CEO Steve Ballmer 在日本演講說 , ”10 年之後不會有自己管理伺服器存放資料 , 執行交易的企業” “ The Big Switch” 書中提到 1910 年北美的工廠大多數是自行設置發電機 , 1930 年後大多轉換成使用電力公司的供電 . 在運算資源的世界中也會進行如此轉換 . 雲端運算會是一種類似 Utility Computing 的概念 , Google, Yahoo, Amazon 將扮演資訊發電廠的角色 .
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何謂雲端運算 舉凡透過網路連線取得由遠端主機提供的服務等,都可以算是一種「雲端運算」。 GartnerGroup : A style of computing where massively scalable IT-enabled capabilities are delivered ‘ as a service ’ to external customers using Internet technologies
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Cloud definition fromNIST Source: NIST, US (National Institute of Standard and Technology)
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5 Essential CloudCharacteristics On-demand self-service Broad network access Resource pooling Location independence Rapid elasticity Measured service Source: NIST, US
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4 Cloud DeploymentModels Private cloud enterprise owned or leased Community cloud shared infrastructure for specific community Public cloud Sold to the public, mega-scale infrastructure Hybrid cloud composition of two or more clouds Source: NIST, US
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3 Cloud ServiceModels Cloud Software as a Service (SaaS) Use provider’s applications over a network Cloud Platform as a Service (PaaS) Deploy customer-created applications to a cloud Cloud Infrastructure as a Service (IaaS) Rent processing, storage, network capacity, and other fundamental computing resources To be considered “cloud” they must be deployed on top of cloud infrastructure that has the key characteristics Source: NIST, US
PC 時代後期之四大徵兆 低價化效應瀰漫整體PC 產業,無論是桌上型或者是筆記型電腦。 從產業的最上游至最下游,每個環節的成本都壓縮到極至。 Moore’s Law 已經沒有幾年光景, Wintel 不再能驅動 PC 成長。 PC 每年出貨量不再以 2 位數字成長,而是變成常態的個位數字成長。 HP 考慮出售 PC 部門… 2010 外商對台採購總金額 850 億美金 , HP 佔 250 億美金…