Characteristics of a Cloud Flashcards
1
Q
On-Demand Usage
A
- A cloud consumer can unilaterally access cloud-based IT resources giving the cloud consumer the freedom to self-provision these IT resources.
- Once configured, usage of the self-provisioned IT resources can be automated, requiring no further human involvement by the cloud consumer or cloud provider.
- This results in an on-demand usage environment.
2
Q
Ubiquitous Access
A
- The ability for a cloud service to be widely accessible
- Establishing ubiquitous access for a cloud service can require support for a range of transport protocols, interfaces and security technologies.
- To enable this level of access generally requires that the cloud service be tailored to the particular needs of different cloud service consumers.
3
Q
Multitenancy
A
- Is a characteristic of a software program that enables an instance of the program to serve different consumers (tenants), each of which is isolated from the other.
- A cloud provider pools its IT resources to server multiple cloud service consumers by using the multitenancy model
4
Q
Elasticity
A
- The automated ability of a cloud to gracefully and transparently scale IT resources, as required in response to runtime conditions or as pre-determined by the cloud consumer or cloud provider.
5
Q
Measured Usage
A
- Represents the ability of a cloud platform to keep track of the usage of its IT resources by cloud consumers.
- The cloud consumer is charged oinly for the IT resources actually used and/or for the time frame where access to the IT resources was required.
6
Q
Resiliency
A
- ## Is a form of failover that distributes redundant implementations of IT resources across physical locations.
7
Q
Resource Pooling
A
- Allows cloud providers to pool large-scale IT resources to serve multiple cloud consumers.
- Commonly achieved through multitenancy technology, and is therefore encompassed by the multitenancy model.
