1. Presented by: Rajdeep Biswas Roll No.: 0104IT071082; Branch: IT (VII Sem.) R.K.D.F. Institute of Science & Technology Cloud Computing When Outsourcing Outsmarts Purchasing!

2. Agenda Defining Cloud Computing Learning about Cloud Computing examples Studying the deployment layers Briefing the deployment models Briefing the Cloud characteristics Looking into the security issues Checking out the inadequacies and advantages Checking the future of Cloud Computing

4. What is Cloud? “C loud” is a metaphor for “Internet”, based on how it is depicted in computer network, diagrams, and is an abstraction for the complex infrastructure it conceals.

5. What is Cloud Computing? L everaging 3 rd party computing capability over the network to cut costs, increase scale, improve agility, and access best practices.. Providing services on virtual machines allocated on lap of large physical machines, typically servers. Engineering Perspective Methods to address dynamic scalability and flexibility for large scale applications. Business Perspective

6. Cloud Examples

7. Layers A computer hardware and/or software that relies on cloud computing for application delivery, or that delivers cloud services, and, in either case, is essentially useless without it. Client Software as a Service (SaaS) delivers software as a service over the Internet, eliminating the need to install and run the application on the customer’s own computer, and simplifying maintenance and support. Application Platform as a Service (PaaS) delivers a computing platform and/or a solution stack as a service, and facilitates deployment of applications without the cost and complexity of buying and managing the underlying hardware and software layers. Platform Infrastructure as a Service (IaaS) delivers computer infrastructure - typically a platform virtualization environment – as a service. Rather than purchasing servers, software or other equipments, clients instead buy those as a fully outsourced service. Infrastructure The server layer constitutes of computer hardware and/or computer software that are specifically designed to deliver the cloud services, including multi-core processors, cloud-specific operating systems and combined offerings. Server

8. Courtesy: Wikipedia (http://en.wikipedia.org/wiki/File:Cloud_computing_types.svg) Cloud Deployment Models

9. Essential Cloud Characteristics On-demand self-service Broad network access Resource pooling - Location independence Rapid elasticity Measured service

10. Security in Cloud

11. Two Broad Categories of Cloud Security ► Security issues faced by cloud providers (organizations providing services via the cloud). → The providers must ensure the security & protection of their infrastructure and clients’ data and applications. ► Security issues faced by the cloud customers. → The customer must ensure that the provider has taken proper security measures to protect their information.

12. Dimensions of Cloud Security Security and Privacy Data Protection Identity Management Physical and Personal Security Availability Application Security Privacy Compliance Business Continuity and Data Recovery Logs and Audit Trails Unique Compliance Requirements Legal and Contractual Issues Liability Intellectual Property End-of-Service

13. The Inadequacies of Cloud ! 1. SLA (Service Level Agreements) 2. Performance 3. Trust Deficit Between Customer and Provider 4. Security Issues 5. Making False Promises

14. Still, Why Cloud Computing ? 1. Software as a Subscription (Pay as you go) 2. Reduced Software Maintenance 3. Increased Reliability 4. Increased Scalability 5. Cost Reduction 6. Environmentally Friendly 7. Matches Current Computing Trends 8. Portability/ Accessibility 9. Efficient Use of Computer Resources 10. Versionless Software

15. The Future → A solid majority of technology experts and stakeholders expect that by 2020, most users will perform most computing and communicating activities through connections to servers operated by outside firms. → This does not mean, however, that most of these experts think the desktop computer will disappear soon. The majority sees a hybrid life in the next decade, as some computing functions move towards the cloud and others remain based on personal computers. Courtesy: Janna Quitney Anderson, Elon University and Lee Rainie, Pew Internet & American Life Project (June 11, 2010)