Cloud Computing Technology Essay

INTRODUCTION grease ones palms calculate is Internet ( calumniate) based on motherment and use of electronic computer technology ( computer science).It is a style of figuring in which dynamically scalable and a good deal legitimateisticised resources be provided as a serving e genuinelywhere the internet.Users rent not have knowledge of, expertise in, or constraint everyplace the technology nucleotide in the stain that supports them. The concept incorporates infrastructure as a receipts (IaaS), platform as a suffice (PaaS) and bundle package as a service (SaaS) as well as sack up 2.0 and other recent (ca. 2007-2009) technology trends which have the common base of operations of reliance on the Internet for satisfying the calculate leads of the users. Examples of SaaS vendors let in Salesforce.com and Google Apps which provide common duty exertions online that are entreed from a blade browser, plot the software and information are stored on the servers.A deprave is a pool of virtualized computer resources. A misdirect asshole 1.Host a novelty of different workloads, including batch-style back-end jobs and interactive, user- facing applications. 2.Allow workloads to be deployed and eggshelld- come in quick through the rapid provisioning of virtual works or physical machines. 3.Support redundant, self-recovering,highly scalable programming models that allow workloads to recover from many unavoidable hardware/software failures. 4.Monitor resource use in real time to enable rebalancing of allocations when needed.Fig 1.1 Overview of mottle computeHISTORYThe rudimentary concept dates back to 1960 when John McCarthy opined that computation may someday be organized as a public utility indeed it shares characteristics with service bureaus which date back to the 1960s.The term bedim had already come into commercialised use in the early 1990s to refer to great cash dispenser networks.By the turn of the 21st century,the term brib e deliberation had started to appear, although most of the concentrate on at this time was on Software as a service (SaaS). In 1999, Salesforce.com was established by Marc Benioff, Parker Harris,and his fellows.They applied many technologies of consumer web sites corresponding Google and Yahoo to business applications.IBM extended these concepts in 2001,as detailed in the involuntary Computing Manifesto-which coverd advanced automation techniques much(prenominal) as self-monitoring, self-healing, self-configuring, and self-optimizing in the management of complex IT organizations with heterogeneous storage, servers, applications, networks, security mechanisms, and other system elements that fundament be virtualized across an enterprise.Amazon.com played a key role in the development of pervert computation by modernizing their data centres after the dot-com bubble and, having found that the new foul architecture resulted in world-shaking congenital efficiency improvements, providing plan of attack to their systems by way of Amazon Web go in 2002 on a utility computation basis. 2007 apothegm increased activity,with Google,IBM and a number of universities embarking on a large scale cloud computing research project, around the time the term started gaining popularity in the mainstream press.WORKING OF bribe COMPUTINGFig 1.2 Working of cloud computingIn cloud computing you only need to load nonpareil application.This application would allow workers to log into a Web-based service which hosts all the programs the user would need for his or her job. Remote machines causeed by another company would run everything from e-mail to word treat to complex data abridgment programs.Its called cloud computing, and it could change the entire computer industry.In a cloud computing system, at that places a strong workload shift.Local computers no longer have to do all the heavy lifting when it comes to hurry applications.The network of computers that make up the cloud handles them instead. Hardware and software demands on the users side decrease.The only thing the users computer needs to be able to run is the cloud computing systems interface software, which can be as simple(a) as a Web browser, and the clouds network masterminds shell out of the rest. deprave ARCHITECTURECloud architecture,the systems architecture of the software systems involved in the go to sleepy of cloud computing, comprises hardware and software designed by a cloud architect who typically works for a cloud integrator. It typically involves multiple cloud components communicating with distributively other over application programming interfaces, usually web serve.Cloud architecture extends to the thickening, where web browsers and/or software applications access cloud applications. Cloud storage architecture is in general coupled, where metadata operations are centralized enabling the data nodes to scale into the hundreds, each independently delivering dat a to applications or users.Fig 1.3 Cloud architectureCOMPONENTS1. diligenceA cloud application leverages the Cloud in software architecture,often eliminating the need to install and run the application on the customers own computer,thus alleviating the burden of software maintenance, ongoing operation, and support.2. CLOUD CLIENTSA cloud customer consists of computer hardware and/or computer software which relies on the cloud for application delivery, or which is specifically designed for delivery of cloud run and which, in either case, is essentially useless without it. For patternMobile ,Thin client ,Thick client / Web browser .3. CLOUD INFRASTRUCTURECloud infrastructure,such as Infrastructure as a service,is the delivery of computer infrastructure, typically a platform virtualization environment,as a service.For examplegrid computing ,Management , Compute ,Platform.4. CLOUD PLATFORMSA cloud platform,such as Paas, the delivery of a computing platform,and/or solution saas,facil itates deployment of applications without the cost and complexity of buying and managing the underlying hardware and software layers.5. CLOUD goA cloud service includes products, services and solutions that are delivered and consumed in real-time over the Internet.For example Web Services (software systems designed to support interoperable machine-to-machine interaction over a network) which may be accessed by other cloud computing components, software, e.g., Software plus services, or end users this instant.6. CLOUD STORAGECloud storage involves the delivery of data storage as a service, including database-like services, often billed on a utility computing basis, e.g., per gigabyte per month. For example Database ,Network attached storage ,Web service .TYPES OF CLOUDS1. PUBLIC CLOUDPublic cloud or external cloud describes cloud computing in the tralatitious mainstream sense, whereby resources are dynamically provisioned on a fine-grained, self-service basis over the Internet, v ia web applications/web services, from an off-site third-party provider who shares resources and bills on a fine-grained utility computing basis.2. HYBRID CLOUDA hybrid cloud environment consisting of multiple internal and/or external providers go away be typical for most enterprises.3. PRIVATE CLOUDPrivate cloud and internal cloud are neologisms that some vendors have recently used to describe offerings that emulate cloud computing on private networks.These (typically virtualisation automation) products claim to deliver some benefits of cloud computing without the pitfalls, bang-upising on data security, corporate governance, and reliability concerns.They have been criticised on the basis that users still have to buy, make, and manage them and as such do not benefit from land up-front capital cost and less hands-on management ,essentially lacking the economic model that makes cloud computing such an intriguing concept.While an analyst predicted in 2008 that private cloud netwo rks would be the future of corporate IT, there is some contention as to whether they are a reality even within the same firm.ROLES compete IN CLOUD COMPUTING1. CLOUD COMPUTING PROVIDERSA cloud computing provider or cloud computing service provider owns and operates live cloud computing systems to deliver service to third parties.Usually this requires significant resources and expertise in building and managing next-generation data centers.Some organisations realise a subset of the benefits of cloud computing by becoming internal cloud providers and servicing themselves, although they do not benefit from the same economies of scale and still have to manoeuvre for peak loads.The barrier to entry is also significantly higher with capital expenditure need and billing and management creates some overhead.Nonetheless, significant available efficiency and agility advantages can be realised, even by crushed organisations, and server consolidation and virtualization rollouts are already well underway.Amazon.com was the first such provider,modernising its data centers which,like most computer networks, were using as little as 10% of its capacity at any one time safe to leave room for occasional spikes.This allowed small, fast-moving groups to add new features faster and easier, and they went on to open it up to outsiders as Amazon Web Services in 2002 on a utility computing basis. Players in the cloud computing service provision game include the likes of Amazon, Google, Hewlett Packard, IBM, Intel, Microsoft, Salesforce, SAP and Yahoo2. userA user is a consumer of cloud computing.The privacy of users in cloud computing has become of increasing concern.The rights of users are also an issue, which is being intercommunicate via a community effort to create a bill of rights.3. traffickerA vendor sells products and services that facilitate the delivery, adoption and use of cloud computing.For exampleComputer hardware,Storage,infrastructure,Computer software,Operatin g systems ,Platform virtualization.APPLICATIONS OF CLOUD COMPUTING1.EASY ACCESS TO DATAClients would be able to access their applications and data from anywhere at any time.They could access the cloud computing system using any computer colligate to the internet.2. REDUCTION OF COSTSIt could bring hardware costs down.Cloud computing systems would strike down the need for advanced hardware on the client side.You wouldnt need to buy the fastest computer with the most memory, because the cloud system would take care of those needs for you. Instead, you could buy an inexpensive computer terminal, enough impact power to run the middleware necessary to connect to the cloud system.3. CONVENIENCECorporations that intrust on computers have to make sure they have the right software in place to achieve goals. Cloud computing systems give these organizations company-wide access to computer applications.Instead, the company could pay a metered fee to a cloud computing company.4. EASY STORAGE Servers and digital storage devices take up space. Some companies rent physical space to store servers and databases because they dont have it available on site. Cloud computing gives these companies the option of storing data on someone elses hardware, removing the need for physical space on the front end.5. NO TECHNICAL SUPPORT RECQUIREDCorporations might save specie on IT support. Streamlined hardware would, in theory, have fewer problems than a network of heterogeneous machines and operating systems.6. SOLUTION TO COMPLEX PROBLEMSIf the cloud computing systems back end is a grid computing system, then the client could take advantage of the entire networks processing power.CLOUD COMPUTING SERVICES1. AMAZON WEB SERVICESThe Amazon development model involves building Zen virtual machine images that are run in the cloud by EC2. That means you build your own Linux/Unix or Windows operating system image and upload it to be run in EC2. AWS has many pre-configured images that you can st art with and customize to your needs. on that point are web service APIs (via WSDL) for the additional support services like S3, SimpleDB, and SQS. Because you are building self-contained OS images, you are creditworthy for your own development and deployment tools. AWS is the most mature of the CC options. Applications that require the processing of huge amounts of data can make effective you of the AWS on-demand EC2 instances which are managed by Hadoop.2. GOOGLE AppEngineGAE allows you to run Python/Django web applications in the cloud.Google provides a set of development tools for this purpose. i.e. You can develop your application within the GAE run-time environment on our local system and deploy it after its been debugged and working the way you want it. Google provides entity-based SQL-like (GQL) back-end data storage on their scalable infrastructure (BigTable) that will support very large data sets. Integration with Google Accounts allows for simplified user authentication.3 . MICROSOFT WINDOWS AZURE color in is essentially a Windows OS running in the cloud.You are effectively uploading and running your ASP.NET (IIS7) or .NET (3.5) application. Microsoft provides tight integration of Azure development directly into Visual Studio 2008. For enterprise Microsoft developers the .NET Services and SQL Data Services (SDS) will make Azure a very attractive option. The Live modelling provides a resource model that includes access to the Microsoft Live Mesh services.CHARACTERSTICS1.COSTprice is based on usage-based options and minimal or no IT skills are required for implementation.2.DEVICE AND LOCATION INDEPENDENCEIt enable users to access systems using a web browser regardless of their location or what device they are using, e.g. PC, active3.MULTI-TENANCYThis enables sharing of resources and costs among a large pool of users.4.RELIABILITYThis is suitable for business continuity and disaster recovery.5.SCALABILITYDynamic (on-demand) provisioning of resources without users having to engineer for peak loads6.SECURITYIt improves due to centralization of data,increased security-focused resources.7.SUSTANIBILITYThis comes through improved resource utilisation, more efficient systems.ADVANTAGES OF CLOUD COMPUTING1. top executive to scale to meet changing user demands quickly2. Pay by use.3. Task oriented4. Virtually no maintainence due to dynamic infrastructure software.5. Application and operating system independent.6. Easy to develop your own web-based applications that run in the cloud.7. Location of infrastructure in areas with lower costs of real estate and electricity.8. Sharing of peak-load capacity among a large pool of users ,improving overall utilization.9. Separation of application code from physical resources.10. not having to purchase assets for one time or infrequent computing tasks. 11. Ability to use external assets to handle peak loads.DRAWBACKS OF CLOUD COMPUTING1. oftentimes limited or no technical support available.2. Canned solutions such may not be full-featured or too task oriented. 3. When there are technical issues,you may lose access to your data or application.4. No control.5. You must have an internet connection.6. If the company hosting the application goes out of business,you may lose access to your data or application permanently. REFERENCES1. http//en.wikipedia.org/wiki/Cloud_computing2. http//communication.howstuffworks.com/cloud-computing1.htm 3. http//communication.howstuffworks.com/cloud-computing2.htm 4. http//en.wikipedia.org/wiki/Cloud_computing_user5. http//communication.howstuffworks.com/cloud-computing.htm 6. http//communication.howstuffworks.com/cloud-computing.htm/printable 7. http//cloudcadet.com/what-is-cloud-computing/8. http//askville.amazon.com/advantages-disadvantages-Web-based-Cloud-Computing- Wave/AnswerViewer.do?requestId=16202235