Your company hosts a website. Due to web traffic spikes that were caused by ads that typically ran for three days, the company has over-purchased capacity in advance of running ads for the next month.
Which benefit of Azure Cloud Services supports cost management for this type of usage pattern?
A) load balancing
B) high availability
C) elasticity
D) high latency
Explanation
Elasticity in Azure could allow the website to scale rapidly, commensurate with demand, due to traffic spikes caused by ads. Microsoft Azure could allocate resources when the spike occurs and deallocate the resources when the traffic spike passes. The elasticity feature makes the capabilities of the cloud appear unlimited and can be allocated in any quantity for any time length.
High latency would not be a feature that would be used in this scenario. Network latency is the time it takes for a packet to traverse the network from the sender to the receiver. The issue in the scenario is a spike in traffic, not a delay in traffic traversing the network.
Load balancing would not be a feature that would be used in this scenario. Load balancing distributes incoming network traffic across a group of servers known as a server pool. Load balancing can increase performance by decreasing the burden that is placed on a server. Load balancing is designed to increase reliability over time, but it would not be as effective in this scenario as elasticity, which allocates resources on demand.
High availability would not be a feature that would be used in this scenario. The high-availability feature allows groups of computers to support applications with little or no downtime. High availability may not protect against spikes, but elasticity can.
Objective:
Cloud Computing Concepts
Sub-Objective:
Describe the benefits and considerations of using cloud services
References:
Microsoft Azure > Blog > Cloud Strategy > Real World Example of Cloud Elasticity With Windows Azure
Wikipedia > Cloud computing > Public cloud
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