Cloud-Computing

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Presentation Description

This PPT will describe about the basics of Cloud Computing and SaaS. It also describes the difference between ASP and Saas. The Cloud Computing Concerns are also included.

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Presentation Transcript

PowerPoint Presentation:

The Fifth Generation of Computing (after Mainframe, Personal Computer, Client-Server Computing, and the web) “Cloud computing is an emerging computing technology that uses the internet and central remote servers to maintain data and applications” Cloud computing is the delivery of computing as a service rather than a product, whereby shared resources, software, and information are provided to computers and other devices as a utility (like the electricity grid) over a network (typically the Internet). Since Cloud application services or "Software as a Service ( SaaS )" delivers software as a service over the Internet, it is eliminating the need to install and run the application on the customer's own computers and simplifying maintenance and support. Before you would need to know abt Cloud Computing you might also know what is SaaS .

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SaaS (Software as a Service) is a new model of how software is delivered. SaaS refers to software that is accessed via a web browser and is paid on a subscription basis (monthly or yearly). Different from the traditional model where a customer buys a license to software and assumes ownership for its maintenance and installation.

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Terms Application Service Provider (ASP) SaaS Implementation time Long Immediate Usability Difficult Easy Dependency Platform Dependence Platform independence Hardware Compliance Difficult Easy Integration Expensive and time consuming Inexpensive Multi Tenant Scalability No Yes Upgrades and Enhancements Infrequent Often

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Client: A cloud client consists of computer hardware and/or computer software that relies on cloud computing for application delivery.

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Applications: Cloud application services or " Software as a Service ( SaaS ) " deliver ‘software ’ as a service over the Internet , eliminating the need to install and run the application on the customer's own computers and simplifying maintenance and support. Platform: Cloud platform services or " Platform as a Service ( PaaS ) " deliver a computing platform and/or solution stack as a service , often consuming cloud infrastructure and sustaining cloud applications . It facilitates deployment of applications without the cost and complexity of buying and managing the underlying hardware and software layers.

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Infrastructure: Cloud infrastructure services or " Infrastructure as a Service ( IaaS ) " delivers computer infrastructure, typically a platform virtualization environment, as a service. Rather than purchasing servers, software, data center space or network equipment, clients instead buy those resources as a fully outsourced service. The service is typically billed on a utility computing basis and amount of resources consumed (and therefore the cost) will typically reflect the level of activity. It is an evolution of virtual private server offerings. Server: The servers layer consists of computer hardware and/or computer software products that are specifically designed for the delivery of cloud services, including multi-core processors, cloud- specific operating systems and combined offerings

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Cloud = Less Investment (not own data center, hardware; use outside provider of servers, storage and bandwidth) Helps to use applications without installations. Access the personal files at any computer with internet access. This technology allows much more efficient computation by centralizing storage, memory, processing and band width

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Perhaps the biggest concerns about cloud computing are security and privacy. Privacy: The cloud model has been criticized by privacy advocates for the greater ease in which the companies hosting the cloud services control, thus, can monitor at will, lawfully or unlawfully, the communication and data stored between the user and the host company Security: Some argue that customer data is more secure when managed internally, while others argue that cloud providers have a strong incentive to maintain trust and as such employ a higher level of security. The relative security of cloud computing services is a contentious issue that may be delaying its adoption.

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Another area of research in the computer science community is autonomic computing. An autonomic computing system is self-managing, which means the system monitors itself and takes measures to prevent or repair problems. Currently, autonomic computing is mostly theoretical. But, if autonomic computing becomes a reality, it could eliminate the need for many IT maintenance jobs.

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