Cloud Computing | Dimension Data Europe


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A model for delivering information technology services in which resources are retrieved from the internet through web-based tools and applications, rather than a direct connection to a server.

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Cloud Computing | Dimension Data Europe

  1. 1. Cloud Computing
  2. 2. What is Cloud Computing?... A model for delivering information technology services in which resources are retrieved from the internet through web-based tools and applications, rather than a direct connection to a server. Data and software packages are stored in servers. However, cloud computing structure allows access to information as long as an electronic device has access to the web. This type of system allows employees to work remotely.
  3. 3. Cloud Computing Services  Software as a Service (SaaS)-End Users  Infrastructure as a Service (IaaS)-Application Developers  Platform as a Service (PaaS)- Network Architects
  4. 4. the neW “Cloud pyramid”
  5. 5. Application provided by Cloud Computing Why would anyone want to rely on another computer system to run programs and store data? The applications of cloud computing are practically limitless. With the right middleware, a cloud computing system could execute all the programs a normal computer could run. Potentially, everything from generic word processing software to customized computer programs designed for a specific company could work on a cloud computing system. Here are just a few reasons: 1. Clients would be able to access their applications and data from anywhere at any time. They could access the cloud computing system using any computer linked to the Internet. Data wouldn't be confined to a hard drive on one user's computer or even a corporation's internal network. 2. Servers and digital storage devices take up space. Some companies rent physical space to store servers and databases because they don't have it available on site. Cloud computing gives these companies the option of storing data on someone else's hardware, removing the need for physical space on the front end. Corporations might save money on IT support. Streamlined hardware would, in theory, have fewer problems than a network of heterogeneous machines and operating systems.
  6. 6. Software as a Service- End Users  Also known as On-demand Service.  Is an application that can be accessed from anywhere on the world as long as you can have an computer with an Internet Connection.  We can access this cloud hosted application without any additional hardware or software.  E.g. : G-mail, Yahoo mail, Hotmail etc..,  Also they can provide security features such as SSL encryption, a cryptographic protocol.
  7. 7. Platform as a Service (PaaS)  In the PaaS model, cloud providers deliver a computing platform, typically including operating system, programming language execution environment, database, and web server.  Application developers can develop and run their software solutions on a cloud platform without the cost.  With some PaaS offers, the underlying computer and storage resources scale automatically to match application demand so that the cloud user does not have to allocate resources manually.  The latter has also been proposed by an architecture aiming to facilitate real- time in cloud environments.  E.g.:, Windows Azure etc.
  8. 8. Infrastructure as a Service (IaaS)  Also known as hardware as a service.  Is a computing power that you can rent for a limited period of time.  Allows existing applications to be run on a cloud suppliers hardware.  Cloud providers offer computers – as physical or more often as virtual machines –, raw (block) storage, firewalls, load balancers, and networks
  9. 9. Cloud Architecture
  10. 10. Modes of Clouds  Public Cloud • Computing infrastructure is hosted by cloud vendor at the vendors premises. • and can be shared by various organizations. • E.g. : Amazon, Google, Microsoft, Sales force  Private Cloud • The computing infrastructure is dedicated to a particular organization and not shared with other organizations. • more expensive and more secure when compare to public cloud. • E.g. : HP data center, IBM, Sun, Oracle, 3tera  Hybrid Cloud • Organizations may host critical applications on private clouds. • where as relatively less security concerns on public cloud. • usage of both public and private together is called hybrid cloud.
  11. 11. Cloud Operating Systems  ZeroPC  Jolicloud  Glide OS  SilveOS  myGoya  iSpaces Cloud Computer  The Places A  xOS  Cloudo, Ghost, Zimdesk, Start force etc.,
  12. 12. Distributed vs. Grid vs. Cloud Rent based on usage only Rent Servers & Hosting costs whether used or not Buy Servers & Colo costs whether used or not Pricing model High - virtualizedLowLow“Green” No contracts, usage based, no upfront costs Costly, sometimes month/year contracts, no CapEx High CapExCost Instant, Flexible, Pay- per-usage Slower, somewhat flexible, Costly Slowest, Rigid & CostlyScalability MinutesDays to WeeksWeeks to MonthsTime CloudGridDistributed
  13. 13. Is Cloud Computing reduces E- Waste?.  Green IT Cloud Computing  Cloud Computing is Eco-Friendly.  We can reduce E-waste by using Cloud Computing i.e. by Infrastructure as a Service (IaaS).  Cloud Computing Helps to Accelerate Green IT  Can reduce Global Warming too..
  14. 14. Disadvantages of Cloud Computing  Security and privacy in the Cloud  Dependency and vendor lock-in  Technical Difficulties and Downtime  Limited control and flexibility  Increased Vulnerability
  15. 15. Commercial Clouds
  16. 16. Conclusion Cloud computing remains strong and has great potential for the future. Its user base grows constantly and more big players are attracted to it, offering better and more fine tuned services and solutions. We can only hope that the advantages will further grow and the disadvantages will be mitigated, since cloud computing seems to have made IT a little bit easier. Happy cloud computing!
  17. 17. Thanking You queries…