Cloud computing
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The document discusses different delivery models of cloud computing including public, private, hybrid, and community clouds. It describes each model and provides examples. It also summarizes the three main service models of cloud computing: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). Key applications of each service model are highlighted. The advantages and drawbacks of cloud computing are outlined along with ways to minimize risks.
![References:
1. Draft NIST Working Definition of Cloud Computing v15,
http://csrc.nist.gov/groups/SNS/ cloud-computing/cloud-def-v15.doc.
2. Wikipedia, http://en.wikipedia.org/wiki/Cloud_computing [Accessed July 20, 2009]
3. Above the Clouds: A Berkeley View of Cloud Computing, Technical Report No.
UCB/EECS-2009-28, Feb 10, 2009
4. Security Guidance for Critical Areas of Focus in Cloud Computing, Cloud Security
Alliance, April 2009
5. Nicholas Carr, The Big Switch: Rewiring the World, from Edison to Google, W.W.
Norton & Co., 2008, ISBN 0393062287
6. Open Cloud Consortium, http://www.opencloudconsortium.org.
7. Open Crowd Cloud Taxonomy,
http://www.opencrowd.com/assets/images/views/views_cloud-tax-lrg.png.](https://image.slidesharecdn.com/cloudcomputing-151203120419-lva1-app6892/85/Cloud-computing-23-320.jpg)
Cloud computing
- 4. REPRESENTATION OF DELIVERY MODELS Public cloud computing Private cloud computing Hybrid cloud computing Community cloud computing
- 5. Public cloud computing: Provides abstracted access to IT infrastructure for the general public via internet Providers allow their customers to rent IT infrastructure on flexible basis of paying for the actual utilization or consumption. ”Pay -as -you –go policy”
- 6. Private cloud computing: The private cloud computing provides abstracted access to IT infrastructure within the organization (agency , company, start-up, club),such as Ubuntu.
- 7. Hybrid cloud computing: The cloud of hybrid computers offering access to abstract combined IT Infrastructure in the areas of public clouds and private clouds, to meet the needs of their users
- 8. Community cloud computing: Provides abstracted access to IT infrastructure as the public cloud. But for the smaller group of users who are mostly distributed locally, shares the costs.(Ex: municipal governments, research institutions etc..)
- 9. LEVELS OF CLOUD COMPUTING: Cloud computing describes the three service models: IaaS-infrastructure as a service in cloud computing. PaaS-platform as a service in cloud computing. SaaS-software as a service in cloud computing.
- 12. Cloud computing offers virtualized system to access computer hardware resources such as network and storage With IaaS users can freely create their own virtual computer cluster Therefore users are only responsible for selection, installation, operation and running of their own software Iaas:
- 13. Virtualization is the ability to run multiple operating systems on a single physical system and share the underlying hardware resources. Hardware Guest OS (Linux) Guest OS (NetBSD) Guest OS (Windows) VM VM VM AppApp AppApp App App Virtual Machine Monitor (VMM) / Hypervisor VIRTUALIZATION:
- 14. APPLICATIONS: COMPUTING and NETWORKING: amazon ec2, amazon workspaces STORAGE: amazon s3, amazon ebs , amazon glacier DATABASE: amazon rds , amazon dynamo db.
- 15. Cloud computing provides access to use of programming or runtime environments with flexible , dynamic, customizable screens and data capacity. In this users develop their own software applications or perform here, with in a software environment that is service provider provided and maintained. PaaS:
- 16. APPLICATIONS: Google app engine Moodle's
- 17. SaaS: Cloud computing offer access using collection of software and application programs SaaS servicers offer special selection of software running on their infrastructure SaaS is also known as software on demand (software as needed)
- 19. Advantages: • Reduction in cost. • Scalability and speed. • Enabling innovation. • Ease of use. • Freedom of location. • Better utilization of limited resources. • Flexibility.
- 20. Drawback: The drawback is that private clouds are expensive for small and medium enterprises for they do not confer economies of scale; capital costs and management costs involved in building or buying, and subsequently maintaining, a private cloud are also much higher.
- 21. Minimizing the risks: • User access. • Regulatory compliance. • Data location. • Data security. • Recovery. • Investigative support. • Long term viability.
- 22. Conclusion • Cloud Computing gets us close to the dream of an efficient, centralized computing power, and there are many software companies positioning their products. • We believe that Cloud could be a disruptive change for some enterprises, or it could be an evolution beyond virtualization and utility computing for others. Many challenges remain – but we believe that Cloud Computing will become an increasingly viable option for enterprise IT.
- 23. References: 1. Draft NIST Working Definition of Cloud Computing v15, http://csrc.nist.gov/groups/SNS/ cloud-computing/cloud-def-v15.doc. 2. Wikipedia, http://en.wikipedia.org/wiki/Cloud_computing [Accessed July 20, 2009] 3. Above the Clouds: A Berkeley View of Cloud Computing, Technical Report No. UCB/EECS-2009-28, Feb 10, 2009 4. Security Guidance for Critical Areas of Focus in Cloud Computing, Cloud Security Alliance, April 2009 5. Nicholas Carr, The Big Switch: Rewiring the World, from Edison to Google, W.W. Norton & Co., 2008, ISBN 0393062287 6. Open Cloud Consortium, http://www.opencloudconsortium.org. 7. Open Crowd Cloud Taxonomy, http://www.opencrowd.com/assets/images/views/views_cloud-tax-lrg.png.