With cloud computing ,you are no longer tied to a single computer .An individual user can access his applications and documents from any locations on any pc via the internet. Cloud computing might sound far- fetched, but chances are that you are already using some cloud applications. Whether you are using Gmail/Hotmail or using a web-based application such as Google calendar or apple Mobileme,or sharing photos with Flicker or Picasa web albums, you are computing in the cloud. With a cloud service ,the application itself is hosted in the cloud.An individual user runs the application over the internet,typically within the web browser. once launched ,the web based application operates and behaves like a standard desktop application.The only difference is that the application and the working documents remain on the host’s cloud servers.If the user’s pc crashes,it does not affect either the host application or the open document,both remain unaffected in the cloud.
According to Merrill Lynch (2008), what makes Cloud Computing new and differentiates it from Grid Computing is virtualization: “Cloud computing, unlike grid computing, leverages virtualization to maximize computing power. Virtualization, by separating the logical from the physical, resolves some of the challenges faced by grid computing”. While Grid Computing achieves high utilization through the allocation of multiple servers onto a single task or job, the virtualization of servers in Cloud Computing achieves high utilization by allowing one server to compute several tasks concurrently.While most authors acknowledge similarities among those two paradigms, theopinions seem to cluster around the statement that Cloud Computing has evolved from Grid Computing and that Grid Computing is the foundation for Cloud Computing.
A Public Cloud is data centre hardware and software run by third parties, e.g. Google and Amazon, which expose their services to companies and consumers via the Internet. A Public Cloud is notrestricted to a limited user base: it “…is made available in a pay-as-you-go manner to the general public”.Companies may not be willing to bear the risks associated with a move towards a Public Cloud and may therefore build internal Clouds in order to benefit from Cloud Computing. Private Clouds refer to such internal data centres of a company or other organization .A Private Cloud is fully owned by a single company who has total control over the applications run on the infrastructure, the place where they run, and the people or organizations using it – simply over every aspect of the infrastructure.The key advantage of a Private Cloud is to gain all advantages of virtualization, while retaining full control over the infrastructure. Hybrid Clouds combine Public and Private Clouds and allow an organization to both run some applications on an internal Cloud infrastructure and others in a Public Cloud. A mixed Cloud environment adds complexity regarding the distribution of applications across different environments, monitoring of the internal and external infrastructure involved, security and privacy, and may therefore not be suited for applications requiring complex databases or synchronization.
Cloud computing providers use various combinations of these technologies to create and deliver applications and services for internal use and sale to customers.Cloud computing is a sequential transition in technology like the transition from mainframes to desktops,laptops,mobile devices and on to the cloud.The computer technology evolution has been both rapid and fascinating.use of web browsers has led to a steady migration from the traditional data center model to today’s cloud based model.Technologies such as server virtualization,parallel processing, vector processing, symmetric multiprocessing and massively parallel processing has fueled the growth of cloud computing. The most common and successful example of cloud computing is SaaS but other functions including communication, infrastructure and platforms are also core components of cloud computing.
Questions about privacy, security, and reliability—a major subject of discussion .Allowing a third-party service to take custody of personal documents raises awkward questions about control and ownership:The user has to rely on the promise of the Cloud provider with respect to reliability,performance and Quality of the Service (QoS) of the infrastructure. The usage of Clouds is associated also with higher security and privacy risks related to data storage and management in two ways: first because of the need to transfer data back and forth to a Cloud so that it can be processed in a Cloud; second because data is stored on an external infrastructure and the data owner relies on the Cloud provider’s assurance that no unauthorized access takes place. If you move to a competing service provider, can you take your datawith you? Could you lose access to your documents if you fail to pay your bill? Do you have the power to expunge documentsthat are no longer wanted? The issues of privacy and confidentiality are equally perplexing.
Worldwide SaaS revenue is forecast to reach $ 12.1B in 2011 from $10 B in 2010( 21% increase over the previous year).As many customers turn to cloud service vendors for their IT need, this revenue is expected to post a healthy growth rate over next 5 years at 15% growth rate. By the end of 2015,it’s projected to reach $21.3 B.
With a cloud service ,the application itself is hosted in the cloud. An individual user runs the application over the internet ,typically within a web browser. Once launched, the web based application operates and behaves like a standard desktop application. The only difference is that the application and the working documents remain on the host’s cloud servers. If at all the user’s PC crashes, it does not affect either .the host application or the open document, both remain unaffected in the cloud.
On June 28, 2011, Steve Ballmer, chief executive officer, Microsoft announced the availability of Office 365, Microsoft’s next generation productivity service. Office 365 is the culmination of more than 20 years of experience delivering world class productivity solutions to people and businesses of all sizes. It brings together Office, SharePoint, Exchange, and Lync in an always-up-to-date cloud service. Customers may try it and buy it at www.office365.com.
Laptops, tablets, and smart devices give you the ability to work anytime and anywhere, so the line between office and home is blurring. With secure virtual private network (VPN) connections, you can access all your work resources wherever you have an Internet connection. Working from home - or telework - is growing in popularity for a number of reasons, including employee recruitment, reduced commuting, lower real estate costs, improved resilience, and eco-friendliness.
It's no longer enough for a CIO to oversee rollouts, integrations and development projects. Instead, IT professionals need to focus on extracting the most business value from new technologies. At the IT staffer level coding and development skills will take a back seat to project management,business analysis and quality assurance testing.2Today, cloud computing is just another way to pay for hardware and software. But a few SaaS vendors are partnering with professional services firms to provide expertise that makes applications actually useful. H&R Block’s Tango consumer online tax-preparation service, for $70, includes unlimited round-the-clock access to tax experts.Enterprises are maintaining huge IT infrastructures, often with excess capacity. To unlock the value in that investment, corporate IT departments will create clouds within their IT infrastructure and lease cloud power to suppliers and customers. This is exactly what Amazon.com is doing with its S3 and Elastic Compute Cloud initiatives.Local constraints on energy costs and capacities; space requirements for IT infrastructure; and up-front costs will disappear as companies become able to tap computing resources situated anywhere on the planet.Security concerns are sited 51% of the time as the top reason enterprises have not yet moved to the cloud. The private cloud addresses this with dedicated data & network security. It will take time for others to get more comfortable with the security options in the managed cloud world and the public clouds like Amazo
The better way of handling complexities of scheduling meeting for many people working for a corporation is by doing it through web based scheduling.
for various activities such as accounting, financial service, healthcare service and human resources as a real-time outsourced service.Companies that have large investments in traditional in-house computing technology will not abandon those investments immediately nor should they. The transition to cloud computing would be quicker for startup companies who can not afford to high upfront investments in IT infrastructure.This technology would impact sooner or later all companies whether startups or already established ones,because the cloud SaaS vendors are becoming more and more like utilities,offering reliable computing powerand basic applications like email,enterprise resource planning ,CRM and a growing array of other applications.
WHAT IS CLOUD COMPUTING? Cloud computing is a style of computing where applications and files are hosted on a “cloud” consisting of thousands of computers and servers all linked together and accessible via the internet. Cloud is a large group of interconnected computers which could be personal computers or network servers. Any web based application or service offered via cloud computing is called a cloud service. Cloud services can include anything from calendar and contact applications to word processing and presentations. Everything you do with cloud computing is web- based instead of being desktop-based.3/6/2013 2
WHAT CAN CLOUD SERVICES DO FOR YOU ? Listen to your favorite music. Host a web conference. Find your driving directions. Make phone calls on the web. Read news and answer emails. 3/6/2013 3
GRID COMPUTING Vs CLOUD COMPUTING Grid computing is a form of computing in which a single large task is broken into several small tasks through a distributed system on multiple computer networks. Grids are usually owned by an organization on its premises. Cloud computing has evolved from the grid computing utility model that implements a virtual supercomputer made up of a cluster of networked or internetworked computers acting in unison to perform very large tasks. The cloud servers are located in physically disparate locations.3/6/2013 4
TYPES OF CLOUD SERVICES Software as a Service(SaaS). Platform as a Service.(PaaS). Infrastructure as a Service(IaaS).3/6/2013 5
SOFTWARE AS A SERVICE(SaaS) SaaS is a model in which the vendors host the application on the internet that is commonly accessible to clients upon subscription. In SaaS business model, the software is hosted on the web and the customers do not have to bear the upgradation & maintenance costs as the vendors do everything such as patching, upgradation and keeping the infrastructure running.3/6/2013 6
SOFTWARE AS A SERVICE(SaaS) Cisco WebEx: Web conferencing software that is available to clients on subscription model. OpenChannel: Banking SaaS solution for online banking and bill payment functionality across multiple channels.3/6/2013 7
SOFTWARE AS A SERVICE(SaaS)Many high powered applications that the customersneed for their everyday business operations arecurrently being offered through SaaS model.Customer Relationship Management(CRM).Web Conferencing.Supply Chain Management(SCM).Human Resources Management(HRM).Enterprise Resource Planning(ERP).Enterprise Risks Management(ERM).3/6/2013 8
PUBLIC Vs PRIVATE Vs HYBRID CLOUDS Clouds services can generally be classified into 3 broad categories depending on the owner of the cloud data centers . Public Clouds. Private Clouds. Hybrid Clouds. 3/6/2013 9
EMERGENCE OF CLOUD COMPUTING Cloud computing emerged from a combination of technologies SERVER VIRTUALIZATION WEB 2.0 / SaaS OPEN SOURCE THE SOFTWARE CLOUD BROADBAND & SOA/MASHUP WIRELESS INTERNET3/6/2013 10
BENEFITS OF CLOUD COMPUTING Lowers IT infrastructure costs . Increased computing power. Few maintenance issues. Instant software updates. Easier group collaboration. Universal access to documents. Intelligent computing. Consistent performance monitoring . Affordable price for use.3/6/2013 11
RISKS ASSOCIATED WITH CLOUD COMPUTING Security concerns with private data. Quality of cloud service. Data migration . Standardization in technology. Reliability of cloud service.3/6/2013 12
FIRST MOVERS IN CLOUD SERVICES Companies like Google ,Amazon , Microsoft,IBM,and Salesforce are offering SaaS to many consumers.Companies Cloud servicesAMAZON Amazon Web Services(AWS),Elastic Computing cloud(EC2),Simple storage service(S3).SALESFORCE Sales Cloud 2 (CRM).GOOGLE Google Apps Engine.MICROSOFT Azure, Hyper V, Office 365.IBM Blue Cloud3/6/2013 16
MICROSOFT OFFICE -365 IN CLOUD www.office365.com .3/6/2013 17
FIVE PROFIT CONCERNS DRIVING BUSINESS TO THE CLOUD. Cloud computing enables reduction in capital expenses on internal infrastructure. Cloud based variable cost model reduces the financial risks as it automatically scales up and down with the volume of business. In-house systems can be migrated to the cloud with relative ease if the process is well designed. Cloud computing is priced very competitively for customers and the customers pay on consumption basis like utilities. It „s attractive to most businesses as it allows them to focus most on their customers, business processes and employees.3/6/2013 18
IMPACT OF CLOUD COMPUTING Professional services will be bundled with commodity cloud services. Large IT -enterprises will deliver cloud services as part-time cloud vendors. Cloud computing will unleash further innovations in many arenas of everyday business. Local constraints on energy costs and capacities, space requirements for IT infrastructure, and up-front investment costs would be reduced significantly. Barriers to Security & Compliance perception would disappear over time. Simplification of the overall information technology landscape would be possible in the foreseeable future..3/6/2013 19
COMMON TRAITS OF CLOUD SERVICES Low barriers to entry and easily accessible to small enterprises. Large scalability options . Multitenancy (many users share the resources). Device independence(Users access the systems on different hardware).3/6/2013 20
COMPONENTS OF CLOUD SERVICEClients:The devices that the end users interact with to manage their information onthe cloud.Eg. Laptops,Desktops,Tablet computers, Mobile phones or PDAs.Datacenters:Refers to the collection of servers where the application is housed andavailable to the clients upon subscription.Distributed Servers: Servers that are in geographically disparatelocations which give the service provider more flexibility in options andsecurity. 3/6/2013 21
THREE COMPONENTS OF CLOUD SOLUTION Internet Data centersClient computers Distributed servers 3/6/2013 22
BENEFITS OF SaaS BUSINESS MODEL Huge cost savings for the clients as they pay based on subscription and no upfront investments for IT infrastructure. Barriers to marketing is few as the applications are available on the web for a large clientele. Clients could access their applications through secure socket layers without complex back-end configurations. Obviates the need for a large number of in-house IT staff for business. Helps protect the intellectual property rights of vendors.3/6/2013 23
INFRASTRUCTURE AS A SERVICE(IaaS). IaaS model is based on the assumption that the vendors make available resources such as server space, network equipments,memory,CPU cycles, and storage space for the clients which can be scaled up and down depending on the needs of the clients. The clients simply pay for the service as subscription fees on contractual basis in stead of owning such IT infrastructure.3/6/2013 24
PLATFORM AS A SERVICE( PaaS) PaaS model is based on the assumption that all the resources required to build applications and services are made available on the web by the vendors and the clients do not need to download or install such software on their PCs.3/6/2013 25
CORPORATE APPLICATIONS OF CLOUD COMPUTING Five major areas where corporations would find cloud services extremely useful. Online planning, scheduling and managing tasks. Collaborating on customer relationship management. Collaborating on project management. Collaborating on Budgets. Collaborating on presentations.3/6/2013 26
CALENDARS, SCHEDULES AND TASK MANAGEMENT USING CLOUD SERVICES. http://calendar.yahoo.com3/6/2013 27
CUSTOMER RELATIONSHIP MANAGEMENT USING Salesforce CLOUD SERVICE3/6/2013 28
MANAGING PROJECT USING CLOUD SERVICE3/6/2013 29
COLLABORATING ON PRESENTATIONS USING GOOGLE DOCS3/6/2013 30
REFERENCES 1.Technical Report No. UCB/EECS-2009-28. 2.http://bit-player.org/bph-publications/CACM-2008-07-Hayes - cloud.pdf. 3.Journal of Computing and Information Technology -CIT 16, 2008, 4, 235–246. 4. A. Weiss, Computing in the Clouds, Networker 11 (4) (2007), pp. 16–25. 5. Miller, Michael, Cloud Computing,Que Publishing.3/6/2013 31
CONCLUDING THOUGHTSThe power of super-computing would be accessible to the masses for variousfunctionalities such as accounting, financial service, healthcare service andhuman resources as a real-time service through cloud computing..The best bet for the companies is to explore the new opportunities of cloudcomputing with an open mind in order to assess its relative strengths andweaknesses as a stand-alone technology implementation.As the technology is now in infancy, with progress of time ,wide spread applicationsof this technology would be possible through standardization before it becomes amainstream method of computing for the masses.Cloud computing would be the economic engine of growth for many startups formeeting their IT needs in everyday business operations.An ultimate ISO standard would emerge in order to ensure the best quality ofcloud services on the web in the foreseeable future. 3/6/2013 32