Cloud Computing
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The document discusses cloud computing, providing an overview of what it is, its history and evolution, characteristics, components, infrastructure models, commercial offerings, advantages, and disadvantages. Specifically, cloud computing is defined as a new class of network-based computing that takes place over the Internet, allowing users to access hardware and software services remotely via the web. The cloud's flexibility, scalability, and cost benefits are highlighted, though concerns around internet dependency, limited features, and data security are also summarized.
Cloud Computing
- 1. CLOUD COMPUTINGWave of the Future…8/14/20101
- 2. Presented by:NUPUR KUMARI PRANAV BHARGAVA SAMIT KR. KAPAT RINI VARGHESE28/14/2010
- 4. What is Cloud Computing?Cloud Computing is a general term used to describe a new class of network based computing that takes place over the Internet.
- 5. In other words, this is a collection/group of integrated and networked hardware, software and Internet infrastructure.
- 6. Using the Internet for communication and transport provides hardware, software and networking services to clients.
- 7. These platforms hide the complexity and details of the underlying infrastructure from users and applications by providing very simple graphical interface or API (Applications Programming Interface).
- 8. Simply a metaphor for the internet8/14/20104
- 9. 8/14/20105The hardware and software services are available to the general public, enterprises, corporations and businesses markets.
- 10. Cloud computing is an umbrella term used to refer to Internet based development and services.
- 11. Remotely hosted: Services or data are hosted on remote infrastructure.
- 12. Services or data are available from anywhere.History of Cloud ComputingThe underlying concept dates back to 1960’s“Computation may someday be organized as a public utility ” -John McCarthyThe term ‘Cloud’ into commercial use in the early 1990’s
- 13. General Magic launched a short-lived Cloud Computing product in 1995
- 14. Salesforce.com was established in 1999 which provided the concept of ‘On Demand’ & Saas68/14/2010
- 15. 8/14/20107History of CC (Contd…)In the early 2000’s Microsoft extended this concepts
- 16. IBM detailed these concept in 2001
- 17. Amazon modernized their datacenters in 2005
- 18. In 2007 Google, IBM etc embarked on a large scale CC research project
- 19. By mid 2008 CC gained popularity in the mainstream pressMore About Cloud Computing…A paradigm
- 20. Information is permanently stored in servers on the internet
- 21. Cachedtemporarilyon clients like desktops, hand-helds, sensors etc.
- 22. A style of computing
- 23. IT services and resources are provided as a service over the internet88/14/2010s
- 24. Example :San Francisco, MondayHome, WednesdayBeijing, on travelJust a web browser and your account with password!
- 25. Once you login, the device is “yours”.
- 26. Data stored on remote servers in the “cloud” (with large capacity)98/14/2010
- 27. 10Why Cloud Computing…?IT Efficiency- Minimize CostsBusiness Agility- Maximize Return8/14/2010
- 29. Cost
- 30. Device and Location Independence
- 31. Multi- Tenancy
- 32. Reliability and Self Healing
- 33. Scalability
- 34. Security
- 35. Sustainability8/14/201012Components of CCClients
- 36. Services
- 37. Application
- 38. Platform
- 39. Storage
- 40. Infrastructure8/14/201013Fig: 1 How users connect to the cloud…
- 41. 8/14/201014Fig: 2 Accessing the cloud… Detailed View
- 42. 8/14/201015Fig: 3 Cloud Computing Architecture
- 43. 8/14/201016CC Architecture (Contd…)User Interaction Interface: How users of cloud interface with the cloud
- 44. Services catalogue:Services a user can request
- 45. System management:Manages the resources available8/14/201017CC Architecture (Contd…)Provisioning tool:Carves out the systems from the cloud to deliver on the requested serviceMonitoring and metering:Tracks the usage of the cloud (optional)Servers: Virtual or physical servers managed by System management
- 47. 8/14/201019PUBLIC CLOUDFig: 4 Public Cloud
- 48. 8/14/201020PRIVATE CLOUDFig: 5 Private Cloud
- 49. 8/14/201021HYBRID CLOUDFig:6 Hybrid Cloud
- 50. Software as a Service (SaaS) ModelProprietary internal IT resourcesRemote, shared servicesSaaS ProviderCompany ACompany BCompany CInternetCompany ACompany BCompany CTraditional Software Model228/14/2010
- 51. 8/14/201023
- 52. 8/14/201024
- 53. 8/14/201025Why CC is the Wave of the Future?Software as a Subscription
- 57. Cost Reduction
- 59. Matches Current Computing Trends
- 61. Efficient Use of Computer Resources
- 62. Versionless Software8/14/201026What is the purpose and benefits?Cloud computing enables companies and applications, which are system infrastructure dependent, to be infrastructure-less.
- 63. By using the Cloud infrastructure on “pay as used and on demand”, all of us can save in capital and operational investment!
- 64. Clients can:
- 65. Put their data on the platform instead of on their own desktop PCs and/or on their own servers.
- 66. They can put their applications on the cloud and use the servers within the cloud to do processing and data manipulations etc. 8/14/201027Opportunities and ChallengesThe use of the cloud provides a number of opportunities:
- 67. It enables services to be used without any understanding of their infrastructure.
- 68. Cloud computing works using economies of scale:
- 69. It potentially lowers the outlay expense for start up companies, as they would no longer need to buy their own software or servers.
- 70. Cost would be by on-demand pricing.
- 71. Vendors and Service providers claim costs by establishing an ongoing revenue stream.
- 72. Data and services are stored remotely but accessible from “anywhere”. 8/14/201028Opportunities and ChallengesIn parallel there has been backlash against cloud computing:
- 73. Use of cloud computing means dependence on others and that could possibly limit flexibility and innovation:
- 74. The others are likely become the bigger Internet companies like Google and IBM, who may monopolise the market.
- 75. Some argue that this use of supercomputers is a return to the time of mainframe computing that the PC was a reaction against.
- 76. Security could prove to be a big issue:
- 77. It is still unclear how safe out-sourced data is and when using these services ownership of data is not always clear.
- 78. There are also issues relating to policy and access:
- 79. If your data is stored abroad whose FOI policy do you adhere to?
- 80. What happens if the remote server goes down?
- 81. How will you then access files?
- 82. There have been cases of users being locked out of accounts and losing access to data.8/14/201029Some Commercial Cloud OfferingsProblem: Commercial offerings are proprietary and usually not open for cloud systems research and development
- 83. 8/14/201030Advantages of Cloud ComputingLower computer costs
- 84. You do not need a high-powered and high-priced computer to run cloud computing's web-based applications.
- 85. Since applications run in the cloud, not on the desktop PC, your desktop PC does not need the processing power or hard disk space demanded by traditional desktop software.
- 86. When you are using web-based applications, your PC can be less expensive, with a smaller hard disk, less memory, more efficient processor etc.
- 87. In fact, your PC in this scenario does not even need a CD or DVD drive, as no software programs have to be loaded and no document files need to be saved.8/14/201031Advantages of Cloud ComputingInstant software updates
- 88. Another advantage to cloud computing is that you are no longer faced with choosing between obsolete software and high upgrade costs.
- 89. When the application is web-based, updates happen automatically - available the next time you log into the cloud.
- 90. When you access a web-based application, you get the latest version - without needing to pay for or download an upgrade.
- 91. Improved document format compatibility
- 92. You do not have to worry about the documents you create on your machine being compatible with other users' applications or operating systems.
- 93. Where Word 2007 documents cannot be opened on a computer running Word 2003, all documents can be read!
- 94. There are no format incompatibilities when everyone is sharing documents and applications in the cloud.8/14/201032Advantages of Cloud ComputingUnlimited storage capacity
- 95. Cloud computing offers virtually limitless storage.
- 96. Your computer's current 200 Gbyte hard drive is small compared to the hundreds of Tbytes available in the cloud.
- 97. Whatever you need to store, you can & you can access it from anywhere in the world using internet connection..
- 99. Unlike desktop computing, in which if a hard disk crashes and destroy all your valuable data, a computer crashing in the cloud should not affect the storage of your data.
- 100. That also means that if your personal computer crashes, all your data is still out there in the cloud, still accessible.
- 101. Cloud computing is a data-safe computing platform!8/14/201033Disadvantages of Cloud ComputingCC is dependent on internet connection
- 102. Does not work well with low-speed connections
- 103. Similarly, a low-speed Internet connection, such as that found with dial-up services, makes cloud computing painful at best and often impossible.
- 104. Web-based applications require a lot of bandwidth to download, as do large documents.
- 105. If you are labouring with a low-speed dial-up connection, it might take seemingly forever just to change from page to page in a document.
- 106. In other words, cloud computing is for the broadband-connection.8/14/201034Disadvantages of Cloud ComputingFeatures might be limited
- 107. Today many web-based applications simply are not as full-featured as their desktop-based applications.
- 108. For example, you can do a lot more with Microsoft PowerPoint than with Google Presentation's web-based offering.
- 109. The basics are similar, but the cloud application lacks many of PowerPoint's advanced features.
- 110. Stored data can be lost
- 111. Theoretically, data stored in the cloud is safe, replicated across multiple machines.
- 112. But on the off chance that your data goes missing, you have no physical or local backup. 8/14/201035Disadvantages of Cloud Computing Stored data might not be secure
- 113. With cloud computing, all your data is stored on the cloud.
- 114. The questions is How secure is the cloud?
- 115. Can unauthorised users gain access to your confidential data?
- 116. Cloud computing companies say that data is secure, but it is too early to be completely sure of that.
- 117. Only time will tell if your data is secure in the cloud.8/14/201036The Future Trend of large vendors entering CC will accelerate
- 118. All major IDEs will provide cloud deployment options
- 119. A next- generation of “Middleware for the cloud” will rise in dominance over traditional J2EE Application Servers
- 120. System administration & Configuration and Network Management will become a field bursting with innovation8/14/201037CONCLUSION
- 121. 8/14/201038This was what the pioneers in the field concluded…Cloud computing is using the internet to access someone else's software running on someone else'shardware in someone else's data center. In this architecture, the data is mostly resident on servers ‘somewhere on the Internet’ and the application runs onboth the ‘cloud servers’ and the user’s browser.Cloud computing is an emerging approach to shared infrastructure in which large pools of systems are linked together to provide IT services.Eric Schmidt Lewis Cunningham, Oracle Ace DirectorIBM press release on “Blue Cloud”It’s one of the foundations of the next generation of computing. . .. It’s a world where the network is the platform for all computing, where everything we think of as a computer today is just a device that connects to the big computer we’re building. Cloud computing is a great way to think about how we’ll deliver computing services in the future.We really don’t want to operate data centres anymore. We’d rather spend our time giving our customers great service and writing great software than managing physical hardware.Don MacAskill, CEO, SmugMugTim O’Reilly, CEO, O’Reilly Media
- 122. 8/14/201039Cloud Computing is the next big wave in computing
- 123. A powerful new abstraction for large scale data processing systems
- 124. A new emerging architecture which can expand the Internet to become the computing platform of the future8/14/201040
- 125. 8/14/201041