a study of cloud computing
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A Study of Cloud Computing
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SummaryDefinitionEvolutionsFeaturesAdvantage and DisadvantageType of ServicesResearch topics
Definition of Cloud Computing
Cloud Computingis
Fuzzy Word
Definition of Cloud Computing"Clouds are vast resource pools with on-
demand resource allocation.Jan Pritzker
“The analogy that finally made sense to them is what I will call 'cloud dining.‘”Omar Sultan
"Cloud computing is ... the user-friendly version of grid computing.“Trevor Doerksen
My Definition“Cloud
computing is on-demand resource provide to users by guarantees of services.”
Evolution of Cloud Computing
Grid ComputingShare CPU between organization
Utility Computing
Grid Computing + Pay-per-use
Software as a Service (SaaS)
Cloud ComputingGrid
+
Utility+
SaaS+
SLA
Advantage of Cloud ComputingReduce CostPerformanceScalability
Disadvantage of Cloud ComputingMust have stable internetSlow than local softwareConcern about reliable and security
Type of Services
Software as a Service (SaaS)
Platform as a Service (PaaS)Web hostingWeb application Framework
Infrastructure as a Service (IaaS)Virtualization
Data Storage as a Service (dSaaS)StorageDatabase
Research Topics in CloudMeta-Cloud, Inter-CloudVirtual Machine Placement
Live MigrationVM Schedule
OptimizationReliability & SecurityStandardGreen IT
Q & A
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