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Cloud Computing

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Jecentha Moodley

on 28 September 2012

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Transcript of Cloud Computing

Cloud Computing Infrastructure as a service Platform as a Service Software as a Service 1981 IBM 5150
First Commercial PC 1991 World Wide Web goes Live 1995 Windows '95 released 2001 Microsoft tablet PC announced 2006 Google launches "Google Labs Spreadsheets" cloud service What is Cloud Computing? Concerns and Benefits Benefits Bill is an executive at a company He must ensure all employees have all the
computing tools they need to do their jobs Buying hardware and software for
each employee is expensive The solution is CLOUD
COMPUTING Services Purchase one software suite, install it on one computer and allow all employees to run the programs they need from remote computers using a web-based service. WHAT DOES THIS MEAN? Cloud computing is the use of computer resources that are delivered as a service over the internet. Each employee works on front-end terminals or devices capable of accessing the internet. About
The Cloud Devices do not need to be high performing devices with large storage capacities. Devices only need to be able to run the cloud computing system's interface software like a browser. The rest of the heavy lifting is done by THE CLOUD The cloud is made up of computers, servers and data storage devices. Each application or program runs on a dedicated server. To maximize the use of the servers in the cloud... Servers are logically subdivided into
multiple virtual servers - server virtualization Applications run on these virtual servers Enormous amounts of storage space to house
data for all its clients is needed. A central server is required to manage the entire cloud system, its traffic, and its client's demands to ensure everything runs smoothly. HOW DOES IT WORK? HOW DOES IT WORK? HOW DOES IT WORK? HOW DOES IT WORK? HOW DOES IT WORK? HOW DOES IT WORK? Software that is independent of hardware HOW DOES IT WORK? HOW DOES IT WORK? HOW DOES IT WORK? HOW DOES IT WORK? HOW DOES IT WORK? Hosted by a centrally accessible server Users don't have to manage software's underlying capabilities User's have the option of easily switching vendors No licensing and maintenance required Delivered internally or over the internet Clients outsource their hardware, servers, storage devices and network components to a cloud computing service provider. Single point of configuration is used for all users of the software Service provider owns equipment and is responsible for housing an maintaining it Organizations can expand their computing expectations without actually having to do it themselves. Organizations pay for only the computing services which they use. Google Compute Engine is an example of an Infrastructure as a Service vendor. PaaS is a cloud application platform that runs on top of IaaS and hosts SaaS applications. PaaS combines a development platform, computing resources, and deployment infrastructure... ... so a company can reduce the cost, time and complexity of application development. 2010 Microsoft releases cloud computing platform service "Windows Azure" HISTORY OF COMPUTING Microsoft's cloud platform is a little more than a year old and is still gathering momentum in the industry. SaaS runs on top of PaaS - applications hosted on a service providers infrastructure to be run over the internet. Cheap - no upfront investment costs and customers charged on a pay-per-use basis The service provider manages the operating, maintaining and support of the software applications. Launched in 2012, AWS allows customers to rent applications by the hour/month and run them on the AWS portfolio of cloud computing. DEPLOYMENT MODELS Public Cloud: Available to general public and is owned by organization selling cloud services Private Cloud: Available to single organization and managed by organization or third party vendor on or off premises. DEPLOYMENT MODELS Community Cloud: Shared by several organizations that have common concerns Hybrid Cloud: consist of two or more cloud types that have the same benefits of all the models it combines. CHARACTERISTICS On-demand self-service: Clouds have an intuitive user interfaces that requires less admin involvement. Broad Access Demand: Users can access information through any type of internet device. CHARACTERISTICS Elasticity: Allows for quick, easy and inexpensive expansion Metered services: Mechanism to capture usage so that customers pay for only what they use. CHARACTERISTICS Resource Pooling: The cloud’s resources are pooled to serve multiple computers using a multi-tenant model. •Reduced costs for hardware and software
•Ease of access to services
•Reduced physical space needs for infrastructure
•Increased network processing power • Privacy: sensitive data can be accessed by
unauthorized personnel.
• Negative impact on computer maintenance
and repair industry.
• Access to data/software depends fully on a
working Internet connection Concerns
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