Cloud computing

Embed Size (px)

DESCRIPTION

 

Text of Cloud computing

  • 1. Cloud computing Ahmed farag mostafa

2. What is the cloud? IT as a service Cloud allows access to services without user technical knowledge or controlof supporting infrastructure What is Best described in terms of what happened to mechanical power over 100 yrsagoCloud Computing? Now computers are simple devices connected to the larger cloud Data processing, storage and software applications that used to run locallyare now being supplied by big central computing stations. Theyre becoming,in essence, computing utilities. 3. What is Cloud Computing?is the delivery of computing as a service rather than a product, whereby sharedresources, software, and information are provided to computers and other devicesover a network.In addition, the platform provides on demand services, that are always on, anywhere, anytime and any place. Pay for use and as needed, elastic (scale up and down in capacity and functionalities). Cloud computing provides computation, software applications, data access data management and storage resourceswithout requiring cloud users to know the location and other details of the computing infrastructure. Resource allocation/services can be adjusted No need to know physical location or configuration Delivery of application via Internet, while business software and data storedon remote servers 4. Characteristics Virtualization Maintenance Agility Performance Accessibilitylocation independence[ Flexibility Application programming interfaceLower cost pay for what you use! Focus on the Core Business Reduction of HW and SW requirements at user-side High Availability Reliability 5. Advantages of Cloud Computing Lower computer costs Improved performance Reduced software costs Instant software updates Improved document format compatibility Unlimited storage capacity Increased data reliability Universal document access Latest version availability 6. Disadvantages of Cloud ComputingStored data might not be secure Stored data can be lost Features might be limited Can be slow Does not work well with low-speedconnection Features might be limited 7. Cloud models SaaSSoftware as a ServicePaaSPlatform as a Service IaaSInfrastructure as a Service 8. SaaSSoftware as a Service 9. SaaS Software delivery model No hardware or software to manage Service delivered through a browser 10. SaaS Advantages Pay per use Security Reliability 11. SaaS Examples CRM Financial Planning Human Resources Word processing 12. PaaSPlatform as a Service 13. Popular services StoragePaaS Database Scalability 14. Examples Google App EnginePaaS Mosso AWS: S3 15. IaaSInfrastructure as a Service 16. Computer infrastructuredelivery model Access to infrastructure stack: Full OS access FirewallsIaaS Routers Load balancing 17. Examples Flexiscale AWS: EC2IaaS 18. Cloud clients 19. vendors 20. Deployment models Public cloud Community cloud Hybrid cloud Private cloud 21. Cloud Computing Challenges Privacy Availability Reliability: Data centers and backup Security Downtime Access Dependency 22. References Cisco Cloud:http://www.canscouncil.net/presentations Wikipedia: http://en.wikipedia.org/wiki/Cloud_computing Nomadesk:http://blog.nomadesk.com/companyupdates/news/why-students-can-use-cloud-computing/ 23. Questions? 24. Thanks ^_^