Cloud computing
- 1. Cloud Computing Akash Manna Dept.-Information Technology Roll-11900215006
- 2. What is Computing? The ACM Computing Curricula 2005 defined βComputing" as "In a general way, we can define computing to mean any goal- oriented activity requiring, benefiting from, or creating computers. Thus, computing includes designing and building hardware and software systems for a wide range of purposes; processing, structuring, and managing various kinds of information; doing scientific studies using computers; making computer systems behave intelligently; creating and using communications and entertainment media; finding and gathering information relevant to any particular purpose, and so on. The list is virtually endless, and the possibilities are vast."
- 3. Trends in Computing ο Grid Computing ο Cluster Computing ο Distributed Computing ο Utility Computing ο Cloud Computing
- 8. Cloud Computing US National Institute of Standards and Technology(NIST) defines Cloud Computing as β Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g.- networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction. β
- 9. Characteristics of Cloud Computing ο΅ On-demand self service ο΅ Broad Network Access ο΅ Resource Pooling ο΅ Massive Scale ο΅ Resilient Computing ο΅ Homogeneity ο΅ Geographic Distribution ο΅ Virtualization ο΅ Service Orientation ο΅ Low Cost Software 9
- 10. Types of Cloud CloudServices Deployment Models Private Cloud Community Cloud Public Cloud Hybrid Cloud Services Models (XaaS) Software as a Service (SaaS) Platform as a Service (PaaS) Infrastructure as a Service (IaaS)
- 11. Cloud Deployment Models ο΅ Private Cloud ο΅ The Cloud infrastructure is provisioned for exclusive use by a single organization comprising multiple consumers ο΅ e.g.- Eucalyptus, Ubuntu Enterprise Cloud, Amazon VPC, etc. ο΅ Community Cloud ο΅ Cloud infrastructure is provisioned for exclusive use by a specific community of consumers having same interest ο΅ e.g.- Google Apps for Government, Microsoft Government Community Cloud, etc. ο΅ Public Cloud ο΅ Cloud infrastructure is provisioned for open use by the general public. ο΅ e.g.- Google App Engine, Microsoft Azure, Amazon EC2, etc. ο΅ Hybrid Cloud ο΅ Cloud infrastructure is a composition of two or more distinct cloud infrastructures (private, community or public). ο΅ e.g. β Amazon vCloud. 11
- 12. Cloud Service Models ο΅ Software as a Service (SaaS) ο΅ The capability provided to the consumer is to use the providerβs applications running on a cloud infrastructure. The applications are accessible from various client devices through either a thin client interface, such as a web browser (e.g. βweb-based email), or a program interface. ο΅ The consumer does not manage or control the underlying cloud infrastructure including network, servers, operating systems, storage, or even individual capabilities, with the possible exception of limited user-specific application configuration settings. ο΅ E.g. βGoogle Drive, Microsoft Office365, Apple iCloud, etc. ο΅ Platform as a Service (PaaS) ο΅ The capability to the consumer is to deploy unto the cloud infrastructure consumer-created or acquired applications created using programming languages, libraries, services, and tools supported by the provider. ο΅ The consumer does not manage or control the underlying cloud infrastructure including network, servers, operating systems, or storage, but has control over the deployed applications and possibly configuration settings for the application-hosting environment. ο΅ E.g. βGoogle App Engine, Apache Stratos, AWS Elastic Beanstalk, etc. ο΅ Infrastructure as a Service (IaaS) ο΅ The capability provided to provision processing, storage, networks, and other fundamental resources ο΅ Consumer can deploy and run arbitrary software ο΅ E.g. βAmazon Web Services (AWS), Microsoft Azure, etc. 12
- 13. Permissions in different cloud service Models Applications Data Runtime Middleware OS Virtualization Servers Storage Network 13SaaS Provider Applications Data Runtime Middleware OS Virtualization Servers Storage Network Applications Data Runtime Middleware OS Virtualization Servers Storage Network PaaS IaaS Provider Provider Consumer Consumer
- 14. Cloud Architecture ο΅ Basic Cloud Computing architecture ο΅ The cloud providers have the physical data centers to provide virtualized services to their users through Internet. The cloud providers often provide separation between application and data. 14
- 15. Virtualization in Cloud ο΅ Virtualization is An abstraction of an execution environment that can be made dynamically available to authorized clients by using well-defined protocols. ο΅ In case of cloud, one single physical machine can be used by different users and different Operating Systems simultaneously by the use of virtualization. 15 Hardware Virtual Machine Monitor (VMM)/Hypervisor VM1 User3 (Mr. Z) OS1 (CentOS) App1 App2 VM2 User1 (Mr. X) OS2 (Windows 8) App3 App6 VM3 User2 (Mr. Y) OS3 (Ubuntu) App4 App5
- 16. Networking in cloud computing ο΅ Different Protocols are used as different modules of the OSI reference model in Cloud Computing 16 OSI Layer Example Protocols IaaS PaaS SaaS 7. Application HTTP, FTP, NFS, SMTP Consumer Consumer Provider 6. Presentation SSL, TLS Consumer Provider Provider 5. Session TCP Consumer Provider Provider 4. Transport TCP Consumer Provider Provider 3. Network IP Consumer Provider Provider 2. Data Link Ethernet, Fibre channel Provider Provider Provider 1. Physical Copper, Optic fibre Provider Provider Provider
- 17. Advantages of cloud computing ο΅ Lower Computer costs ο΅ No need of a high powered and high priced computer to run cloud computingβs web-based applications. ο΅ Improved performance ο΅ With few large programs hogging in your computerβs memory, you will see better performance from your PC. ο΅ Unlimited storage capacity ο΅ Cloud computing offers virtually limitless storage ο΅ Increased data reliability ο΅ Unlike desktop computing, in which if a hard disk crashes and all your valuable data is lost, a computer crashing in cloud should not affect the storage of your data. ο΅ Reduced software costs ο΅ Instead of purchasing expensive software, you can get most of what you need for free. ο΅ Instant software updates ο΅ When the application is web-based, updates happen automatically available the next time you log into the cloud. ο΅ Improved document format compatibility ο΅ There are less format incompatibilities when everyone is sharing documents & applications in the cloud. ο΅ Universal information access ο΅ Documents are instantly available from wherever you are. ο΅ Easier group collaboration ο΅ Multiple users can collaborate easily on documents and projects. ο΅ Device independence ο΅ Changes to computers, applications and documents follow you through the cloud. 17
- 18. Disadvantages of cloud computing ο΅ Requires a constant internet connection ο΅ Cloud computing is impossible without internet connection. ο΅ Does not work well with low-speed connections ο΅ Web-based applications require a lot of bandwidth to download. ο΅ Features might be limited ο΅ Many web-based applications are simply not as full-featured as their desktop-based counterparts ο΅ Can be slow ο΅ Even with a fast connection, web-based applications tend to be slower than desktop-based. ο΅ Stored data might not be secured ο΅ With cloud computing, all your data is stored in the internet. ο΅ Stored data can be lost ο΅ Relying on the cloud puts you at risk if the cloud lets you down. 18
- 19. Are you using Cloud Computing? ο΅ This are the common Cloud Computing platforms. Look if you have used any of these 19
- 20. References ο΅ This are some of the links and articles followed to make this report. i. https://onlinecourses.nptel.ac.in/noc18_cs16/ ii. https://www.cse.iitb.ac.in/~abhirup09/Docs/cloud_computing_final_report. pdf iii. https://www.tutorialspoint.com/cloud_computing/cloud_computing_tutorial .pdf iv. http://www.smallbiztechnology.com/archive/2011/09/wait-what-is-cloud- computing.html v. https://www.javatpoint.com/virtualization-in-cloud-computing vi. http://slideshare.net/alexamies/networking-concepts-and-tools-for-the- cloud vii. https://www.researchgate.net/publication/308777747_fundamentals_of_Clo ud_Computing 20