1. Shayan Zamani University of Science and Technology Mazandaran, Babol Sh.zamani@ustmb.ac.ir 07 Jan 2010 Seminar of “Virtual Machines” course 1/21

2.  Motivation What is Cloud Computing? Why Cloud Computing? Cloud Computing Services Cloud Computing Service Providers Types of Clouds Virtualization in Cloud Computing  Compare Cloud Computing & Grid Computing  Advantages & Disadvantages  Conclusion 2/21 Cloud Computing

3. Cloud Computing offers the ability to access software or information that can be delivered on-demand over the internet,without the need to store it locality [1,3,4]. 3/21 Cloud Computing

4. If you use online photo storage or word processing or online e-mail or an online spreadsheet or online data storage or any other internet-based application, you use “Cloud Computing” [5]. 4/21 Cloud Computing

5. 5/21  Software as a Service (SaaS): Any web application is a Cloud application service in the sense that it resides in the Cloud[4,6]. Google Amazon Facebook Twitter Flickr Cloud Computing

6. 6/21  Platform as a Service (PaaS): One step up from pure utility computing are Cloud platform services, which hide virtual machine instances behind higher- level APIs[4,6]. Google Apps Google AppsEngine Salesforce’s force.com Cloud Computing

7. 7/21  Infrastructure as a Service (IaaS): Provides raw virtual machine instances, storage, and computation at pay-as-you-go utility pricing, and is currently the leading provider in this category[4,6]. Amazon Elastic Compute Cloud(EC2) Amazon Simple Storage Service(S3) Cloud Computing

8. 8/21 Cloud Computing

9. 9/21  There are three types of clouds[1]: Private Clouds Public Clouds Hybrid Clouds Cloud Computing

10. 10/21 Virtualization refers primarily to platform virtualization, or the abstraction of physical IT resources from the users and applications using them[6]. Virtualization allows servers, storage devices, and other hardware to be treated as a pool of resources rather than discrete systems[6]. Virtualization is used to, physical resources into multiple virtual sources and logic are, as more users can simultaneously use the resources[6]. Cloud Computing

11. 11/21 Cloud Computing

12. 12/21 Higher Utilization Rates: Workloads can be encapsulated and transferred to idle systems[6]. Lower Power Usage/Costs: Using virtualization to consolidate makes it possible to cut total power consumption and save significant costs[6]. Space Savings: Virtualization can alleviate the strain by consolidating many virtual systems onto fewer physical systems[6]. Cloud Computing

13. 13/21 Cloud Computing

14. 14/21 Architecture: CloudGrid Cloud Computing

15. 15/21 Cloud Computing

16. 16/21 Cloud Computing

17. 17/21 Computer costs less Developed performance Software costs less Rapid and permanent improvement software More compatible format documents Unlimited storage capacity Cloud Computing

18. 18/21 More reliability data Global access to documents Having latest version Group cooperation easier Independent of hardware Cloud Computing

19. 19/21 Need a permanent connection to the Internet With low speed Internet connection is not working Can be slow Features may be limited The data stored may not be adequate security Cloud Computing

20. 20/21 In summary, we can say that cloud computing model to process the huge volume of information that benefits due to its high computational model as most internet and computer world are discussed. Cloud Computing

21. 21/21 [1] B.P.Rimal, E.Choi, I.Lumb, ” A Taxonomy and Survey of Cloud Computing Systems”, in Fifth International Joint Conference on INC, IMS and IDC(NCM '09), 25-27 Aug. 2009. [2] B.R.Kandukuri, V.R.Paturi, A.Rakshit, “Cloud Security Issues”, in IEEE International Conference on Services Computing(SCC '09), 21-25 Sept. 2009. [3] I.Foster, Zh.Yong, I.Raicu, S.Lu, “Cloud Computing and Grid Computing 360- Degree Compared”, in Grid Computing Environments Workshop(GCE '08), 12-16 Nov. 2008. [4] P.C.Y.Sheu, W.Shu, W.Qi, H.Ke, R.Paul, “Semantic Computing, Cloud Computing, and Semantic Search Engine”, IEEE International Conference on Semantic Computing(ICSC '09), 14-16 Sept. 2009. [5] S.AjayKumar, C.Nachiappan, K.Periyakaruppan, P.Boominathan, “Enhancing Portable Environment Using Cloud and Grid”, in International Conference on Signal Processing Systems, 15-17 May 2009. [6] T.C.Chieu, A.Mohindra, A.A.Karve, A.Segal, “Dynamic Scaling of Web Applications in a Virtualized Cloud Computing Environment”, in IEEE International Conference on e-Business Engineering(ICEBE '09), 21-23 Oct. 2009. Cloud Computing