21
NIST對雲端運算的定義
Public Private HybridCommunity
Deployment
Models
Service
Models
Software as a
Service (SaaS)
Platform as a
Service (PaaS)
Infrastucture as a
Service (IaaS)
Essential
Characteristics
On-Demand
Self Service
Broad Network
Access
Resource Pooling
Rapid ElasticityMeasured Service
Visual Model of NIST’s Working Definition of Cloud Computing
http://www.csrc.nist.gov/groups/SNS/cloud-computing/index.html
22.
22
雲端運算的特性
多重租賃/共享資源 (multitenancy)
Multiple users use the same resource in
network level、host level and application
level
(資料來源:Cloud security and privacy :Tim Mather et al.)
24
雲端運算的特性
彈性(elasticity)
Userscan rapidly increase and decrease
their computing resources as they needed,
as well as release resources to other
users when they are no longer required.
(資料來源:Cloud security and privacy :Tim Mather et al.)
25.
25
雲端運算的特性
用多少付多少(pay asyou go)
Users pay for only the resource they
actually use.
(資料來源:Cloud security and privacy :Tim Mather et al.)
26.
26
雲端運算的特性
自我調配(self-provisioning)
Usersself-provisioning resources, such as
systems( processing capability, software,
storage) and network resources.
(資料來源:Cloud security and privacy :Tim Mather et al.)