however, there are significant technical, operational and organizational
issues which need to be tackled before clouds are used
extensively at the enterprise level [50]. Current cloud computing
services are often not cost-effective for larger enterprises, especially
those that have achieved best-of-breed efficiencies from their
computing operations. McKinsey Consulting found that a ‘typical’
data center of a large organization can operate at significantly lower
costs than what would be required to outsource it to a cloud service
like Amazon.com's EC2 (though this price can be significantly lowered
through pre-payment schemes, and with Linux systems). Further,
McKinsey estimates that though the cloud service would lower labor
costs, the extent of decrease (10–15%) is modest. Finally, many
organizations set their service level agreement (SLA) uptimes at
99.99% or higher, which cloud providers currently are not prepared to
match.
The equations are very different for SMEs that do not have the
wherewithal to set up the initial infrastructure that is necessary to
realize the cost structures of large data centers. The prices and the
SLAs from the leading cloud providers are far better than what most
SMEs can realize with their modest investment levels. Even more
significantly, cloud computing needs no upfront investment, which
will allow cash-strapped SMEs more flexibility with the use of their
capital. Having much less of legacy IS infrastructure to contend with, it
will also be much easier for SMEs to move to the cloud (and in many
cases, the cloud might be the first instance when they try a new
functionality, e.g. ERP, because the traditional alternative would have
been too expensive in the first place). Finally, smaller organizations
will have much less of the ingrained “attitudinal” issues that Carr [10]
noted to deal with in moving their IS infrastructure to a cloud.
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however, there are significant technical, operational and organizationalissues which need to be tackled before clouds are usedextensively at the enterprise level [50]. Current cloud computingservices are often not cost-effective for larger enterprises, especiallythose that have achieved best-of-breed efficiencies from theircomputing operations. McKinsey Consulting found that a ‘typical’data center of a large organization can operate at significantly lowercosts than what would be required to outsource it to a cloud servicelike Amazon.com's EC2 (though this price can be significantly loweredthrough pre-payment schemes, and with Linux systems). Further,McKinsey estimates that though the cloud service would lower laborcosts, the extent of decrease (10–15%) is modest. Finally, manyorganizations set their service level agreement (SLA) uptimes at99.99% or higher, which cloud providers currently are not prepared tomatch.The equations are very different for SMEs that do not have thewherewithal to set up the initial infrastructure that is necessary torealize the cost structures of large data centers. The prices and theSLAs from the leading cloud providers are far better than what mostSMEs can realize with their modest investment levels. Even moresignificantly, cloud computing needs no upfront investment, whichwill allow cash-strapped SMEs more flexibility with the use of theircapital. Having much less of legacy IS infrastructure to contend with, itนอกจากนี้ยังจะง่ายมากสำหรับ SMEs เพื่อย้าย ไปยัง cloud (และ ในหลายกรณี เมฆอาจจะอินสแตนซ์แรกเมื่อพวกเขาพยายามใหม่ฟังก์ชัน เช่น ERP เนื่องจากมีทางเลือกแบบดั้งเดิมแล้วราคาแพงเกินไปในสถานที่แรก) สุดท้าย องค์กรขนาดเล็กจะมากน้อยของปัญหา "attitudinal" ingrained คาร์นั้น [10]ตั้งข้อสังเกตว่าด้วยในการย้ายโครงสร้างพื้นฐานของ IS ไป cloud
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