Abstract
One of the most important areas for consumers is security, performance and availability when it comes to cloud computing. Availability refers to the uptime of a system, a network of systems, hardware and software that collectively provide a service during its usage. Traditionally the availability of these has been limited to local installations of hardware and software resources which businesses and consumers deployed and maintained. With the advent of cloud services there is a considerable shift of these resources into the cloud. While cloud computing presents some cost effective benefits for the consumers and businesses, it is also extremely important for the cloud service providers to offer environments that are highly scalable and high in availability. This will in many ways dictate the credibility of these cloud services. Regardless of the size of an organization prolonged downtime of the service might be disastrous to its business, customer loyalty and brand value. This paper discusses the state of availability of services in the cloud.
Highlights
Cloud service providers in recent years claim to provide both the cost and efficiency benefits to the businesses
Availability refers to the uptime of a system, a network of systems, hardware and software that collectively provide a service during its usage
These cloud services are categorized into three categories namely Software as a service (SaaS), Platform as a Service (PaaS) and Infrastructure as a Service (IaaS) (Sun, 2009)
Summary
Cloud service providers in recent years claim to provide both the cost and efficiency benefits to the businesses. It predicted that 25 percent of total IT spending would be towards the cloud services in the 2 to 5 years If this is going to be true it will be a major shift for the companies, consumers from how businesses will be performed and architected. The services providers are expected to offer much more robust cloud infrastructures to ensure that their consumers are presented with an environment that is highly scalable and has high availability and service delivery capabilities. This is true for the public, private and hybrid models of the cloud
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