introduction to cloud computing
- 1. Dr.S.SHAJUN NISHA, MCA.,M.Phil.,M.Tech.,MBA.,Ph.D Assistant Professor & Head Dept. of Computer Science (PG) Sadakathullah Appa College shajunnisha_s@yahoo.com +91 99420 96220 INTRODUCTION TO CLOUD COMPUTING
- 2. UNIT 1 Understanding Cloud Computing 2CLOUD COMPUTING
- 3. DEFINITION • It is the delivery of on demand computing service over the internet on a pay as you go basis. • An Emerging Computing Technology that uses the Internet and Central Remote Servers to maintain data and application. • A combination of hardware and software based computing resources delivered as a network service. • It also refers to Manipulating, Configuring and accessing the application online. • Makes possible to save files to a remote database and retrieve them on demand. 3CLOUD COMPUTING
- 5. Difference between Internet and Cloud • Internet is establishing and maintaining connectivity of computers • Cloud is a technology delivers many type of resource over internet 5CLOUD COMPUTING
- 7. KEY PROPERTIES Cloud computing User-centric Task centric powerful Accessible Intelligent Programmable users having more control, more choices or more flexibility Connecting hundreds or thousands of computers focus is on how the application can be helpful to complete the task users can instantly retrieve more information from multiple repositories. Data retrieval using intelligent analysis technique Automated tasks 7CLOUD COMPUTING
- 10. Client/Server Computing: Centralized Applications and Storage • Everything operated on the client/server model. • All the software applications, all the data, and all the control resided on huge mainframe computers otherwise known as servers. • Users accessed the mainframe only when granted permission. • Processing power is limited. • When multiple people are sharing a single computer, even if that computer is a huge mainframe, you have to wait your turn. • So the client/server model, differed from cloud computing in that it did not have a user-centric focus; 10CLOUD COMPUTING
- 12. Peer-to-Peer Computing: Sharing Resources • P2P computing defines a network architecture in which each computer has equivalent capabilities and responsibilities. • Every computer is a client and a server; there are no masters and slaves. • By recognizing all computers on the network as peers, P2P enables direct exchange of resources and services. • P2P was also a decentralizing concept. Control is decentralized, with all computers functioning as equals. 12CLOUD COMPUTING
- 14. Distributed Computing: Providing More Computing Power • Distributed computing also refers to the use of distributed systems to solve computational problems. • In distributed computing, a problem is divided into many tasks, each of which is solved by one or more computers. 14CLOUD COMPUTING
- 15. Collaborative Computing: Working as a Group • Multiple users to work simultaneously on the same computer-based project. This type of collaborative computing is the driving force behind cloud computing. • In addition, users must be able to share files and have multiple users work on the same document simultaneously. 15CLOUD COMPUTING
- 16. Cloud Computing: The Next Step in Collaboration • Users from multiple locations within a corporation, and from multiple organizations,desired to collaborate on projects that crossed company and geographic boundaries. To do this, projects had to be housed in the “cloud” of the Internet. 16CLOUD COMPUTING
- 18. CLOUD • The cloud is a collection of computers and servers that are publicly accessible via the Internet. • This hardware is typically owned and operated by a third party on a consolidated basis in one or more data center locations. 18CLOUD COMPUTING
- 19. Two Sections in cloud architecture • Front End • Back End Each of the ends is connected through a network, usually Internet. CLOUD ARCHITECTURE 19CLOUD COMPUTING
- 21. Front End • The front end refers to the client part of cloud computing system. • It consists of interfaces and applications that are required to access the cloud computing platforms, Example - Web Browser. Back End • The back end refers to the cloud itself. • It consists of all the resources required to provide cloud computing services. • It comprises of huge data storage, virtual machines, security mechanism, services, deployment models, servers, etc. 21CLOUD COMPUTING
- 22. Process behind cloud architecture • When users select a task or service (either starting an application or opening a document). • The user’s request then gets passed to the system management, which finds the correct resources and then calls the system’s appropriate provisioning services. • These services slice out the necessary resources in the cloud, launch the appropriate web application, and either creates or opens the requested document. • After the web application is launched, the system’s monitoring functions track the usage of the cloud so that resources are attributed to the proper user(s). 22CLOUD COMPUTING
- 23. Process behind cloud architecture 23CLOUD COMPUTING