IT Document - SLA 延伸應用 in Cloud Computing and Outsourcing

IT Document - SLA 延伸應用 in Cloud Computing and Outsourcing

寫完了IT DOCUMENT SLA 後
還覺得意猶未盡 來介紹一下SLA 延伸應用

看看WIKI怎麼說先
(天下文章抄抄抄...我自首!!資料來源:http://en.wikipedia.org/wiki/Service_level_agreement)

In Cloud Computing
Cloud computing, (also Grid computing and service-oriented architecture), uses the concept of service level agreements to control the use and receipt of (computing) resources from and by third parties.
雲端使用SLA來對客戶進行雲端資源使用管制與收費

The main point is to build a new layer upon the grid, cloud, or SOA middleware able to create a negotiation mechanism between providers and consumers of services.[3].
SLA在這的主要功能是提供雲端資源提供商與使用者一個協商機制

The underlying benefit of cloud computing is shared resources, which is supported by the underlying nature of a shared infrastructure environment. Thus, service level agreements span across the cloud and are offered by service providers as a service based agreement rather than a customer based agreement. Measuring, monitoring and reporting on cloud performance is based upon an end user experience or the end users ability to consume resources.
在這SLA可以適用各式各樣的雲端應用層級 也可涵蓋不同的雲端資源與服務 不再拘現以往單純的客戶間的合約 SLA 甚至可以根據使用者對雲端資源使用 提供可數量化 可監測 可用以商業報告的雲端PERFORMANCE

The downside of cloud computing, relative to SLAs, is the difficultly in determining root cause for service interruptions due to the complex nature of the environment.
有一個SLA無法蓋括的地方 在現實複雜環境裡 很難去找出真正造成意外發生的主因

In Outsourcing
Outsourcing involves the transfer of responsibility from an organization to a supplier.
所謂的外包 是將公司內部的某些工作 交由外界的公司來代理 (像將DATA CENTER 外包)

The management of this new arrangement is through a contract that may include a Service Level Agreement (SLA).
外包後 公司會與外包公司簽署管理條約 其中包括SLA

The contract may involve financial penalties and the right to terminate if SLAs are consistently missed. Setting, tracking, and managing SLAs is an important part of Outsourcing Relationship Management (ORM) discipline. It is typical that specific SLAs are negotiated up front as part of the outsourcing contract, and they are utilized as one of the primary tools of outsourcing governance.
在這SLA就比較像商業合約 會有金錢相關的條約 像是外包公司每年收費 或是服務太差時的罰款之類 通常在訂定外包合約時也會包括SLA一起簽訂 SLA在外包監督裡是首要的遵循手冊