Virtualization and Cloud Computing World
24 Feb 2013
This paper will focus on organization’s IT/IS strategies that called utilizing virtualization combine with cloud computing. The organization’s use of Saas Paas or laas to reduce the total cost of ownership (TOC) and results produce an increase in Return on Investment (ROI). I will examine the impact to IT support personnel after implementation new strategy and infrastructure. I will identify three considerations that management should be aware of as the new strategy is incorporated into daily operations. I will provide architectural diagrams showing usage of Saas Paas and Laas. Finally, I will provide three security issues that may arise utilizing this type of infrastructure.
Let me begin by discussing how corporate America and businesses are rapidly adopting the tools to enhance the capability for an organization to grow utilizing strategies known as software as a service (SaaS), platform as a service (PaaS) and infrastructure as a service (IaaS) . These strategies are all a part of system virtualization. As I search the Internet, I found a good depiction of what each strategy offers to the organization and for this discussion I would like to share it , as I did when I answered question one on incorporating cloud computing. “Cloud Computing is a broad term that describes a broad range of services. As with other significant developments in technology, many vendors have seized the term “Cloud” and are using it for products that sit outside of the common definition. In order to truly understand how the Cloud can be of value to an organization, it is first important to understand what the Cloud really is and its different components. Since the Cloud is a broad collection of services, organizations can choose where, when, and how they use Cloud Computing. In this report we will explain the different types of Cloud Computing services commonly referred to as Software as a Service (SaaS), Platform as a Service (PaaS) and Infrastructure as a Service (IaaS) and give some examples and case studies to illustrate how they all work. We will also provide some guidance on situations where particular flavors of Cloud Computing are not the best option for an organization. The Cloud Computing Stack
Cloud Computing is often described as a stack, as a response to the broad range of services built on top of one another under the moniker “Cloud”. The generally accepted definition of Cloud Computing comes from the National Institute of Standards and Technology (NIST) . The 4
NIST definition runs to several hundred words  but essentially says that; Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction. What this means in plain terms is the ability for end users to utilize parts of bulk resources and that these resources can be acquired quickly and easily. NIST also offers up several characteristics that it sees as essential for a service to be considered “Cloud”. These characteristics include; • On-demand self-service. The ability for an end user to sign up and receive services without the long delays that have characterized traditional IT • Broad network access. Ability to access the service via standard platforms (desktop, laptop, mobile etc) • Resource pooling. Resources are pooled across multiple customers  • Rapid elasticity. Capability can scale to cope with demand peaks  • Measured Service. Billing is metered and delivered as a utility service  More than a semantic argument around categorization, we believe that in order to maximize the benefits that Cloud Computing brings, a solution needs to demonstrate these particular characteristics. This is especially true since in...
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