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Understanding Cloud Computing study notes

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Learning Objectives 1  Describes the emergence of cloud computing from a combination of business drivers and technology innovations and describe the evolution of definitions associated with cloud computing.  Describe the responsibility and challenges of capacity planning for IT enterprises and explain the issue of operating overhead for organizations with fluctuating or unpredictable usage requirements.  Explain the need for organizational agility for an IT enterprise to respond to business change.  Describe the concept of grid computing and the notion of “pay-asyou-go” computing.Learning Objectives 2  Explain the demand-driven nature and the back-end technology architectures that are commonly part of Web applications.  Explain the emergence of cloud computing as a distinct field of expertise resulting from the business drivers and technology innovations.  Describe the term “service” within the context of cloud computing and explain what constitutes an IT resource.Learning Objectives 3  Describe horizontal scaling and the two types of horizontal scaling – and – describe vertical scaling and the two types of vertical scaling.  Explain virtualization as a key technology in cloud computing environments, as well as the purpose of a virtualization environment  Explain what constitutes a cloud and the difference between an onpremise and cloud- based IT resourceLearning Objectives 4  Describe the term “service” from a general IT perspective and what constitutes a cloud service.  Describe the service agent and how it is commonly used within clouds.  Describe the benefit of Reduced Investment and Proportional Costs and explain the relationship of this benefit to the pay-for-use billing model and how the cost benefits of leasing cloud-based IT resources differ from on-premise IT resources.  Describe the benefit of Increased Scalability and explain how this benefit can relate to an organization’s responsiveness.  Describe the benefit of Increased Availability and Reliability and explain how this benefit relates to failover support and how it is provided transparently to cloud consumers.  Describe the challenge of Increased Security Vulnerabilities and explain how this challenge relates to expanding and overlapping trust boundaries and how it also relates to security technology compatibility issues between cloud consumers and cloud providers.Learning Objectives 4  Describe the challenge of Reduced Operational Governance Control and explain why this challenge arises with cloud environments and how it relates the cloud consumer’s usage of cloud provider SLAs. Further explain also how this challenge can lead to problems with irresponsible cloud providers.  Describe the challenge of Limited Portability between Cloud Providers and explain why cloud providers impose proprietary characteristics within their clouds and explain the role of industry standardization in relation to this challenge.  Describe the challenge of Multi-Regional Compliance and Legal Issues and explain how legal issues pertaining to the geographic location of cloud consumer data and IT resources can cause problems.A Brief History 1

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