Elements of Cloud Computing By : Satish Suthar Sumeru Software Solutions Pvt Ltd
Agenda What is Cloud Computing Why Cloud Computing What is there in clouds. Influence of Cloud in IT. Pros and Cons
What is Cloud Computing Everything is hosted in the clouds Large group of interconnected computers. Wikipedia definition : Cloud computing is a style of computing in which dynamically scalable and often virtualized resources are provided as a service over the Internet. Users need not have knowledge of, expertise in, or control over the technology infrastructure in the "cloud" that supports them. The first academic use of this term appears to be by Prof. Ramnath K. Chellappa (currently at Goizueta Business School, Emory University) who originally defined it as a computing paradigm where the boundaries of computing will be determined by economic rationale rather than technical limits
Characteristics of Computing Beyond a single company or enterprise. Access via internet. To the end user, technology and infrastructure behind the cloud is invisible. Probably that’s the reason to call it as ‘Cloud’. User-centric : data in the cloud belongs to user, and can share it. Task-centric : focus is shifted from what it can do to what you need done. (Feature to Benefit) Powerful : Hundreds and thousands computers create a Super Computer. Accessible : You can retrieve more information as many parallel computers are running your application. Intelligent : Data mining and analysis are necessary as a large set of data stored on the computers in cloud. Programmable : Cloud’s computers must be programmed to automate the redistribution and load sharing etc.
Cloud Architecture System Management UI Provisioning Services Web Application
Cloud Storage Primary use of Clouds Multiple third party servers are used rather than on the traditional dedicated servers. Virtual servers : appears as if data stored in a particular place with a specific name. But that place doesn’t exist in reality. Storage location may change from minute to minute. Advantage : Cheaper than dedicated physical resources. Secure from accidental erasure or hardware crashes. Since multiple copies are saved.
Cloud Services Web-based application or services offered via cloud computing. Accessed by browser. If PC crashes, it doesn’t affect either the application or document. Access from anywhere. Documents are no linger machine-centric.
Cloud Computing v/s Web 2.0 Both are just 2 different ways of looking at the same phenomenon. Web 2.0 is the network as platform, spanning all connected devices. Some define Web 2.0 in collaborative terms, because all the websites get their value from the action of users. Cloud computing refers specifically to the use of Internet as a computing platform, Web 2.0 is an attempt to explore and explain the business rules of the platform.
Advantage Lower Cost Computers for users. Improved Performance Lower IT Infrastructure Costs Fewer Maintenance Issues Lower Software Costs Instant Software Updates Increased Computing Power – not limited to what a single desktop PC can do, but you have the power of entire cloud as your disposal. Unlimited Storage Capacity Increased Data Safety Improved Compatibility Between Operating Systems – In cloud OS simply don’t matter. You can connect your Windows computer to the cloud and share documents with computers running Apple’s MAC OS, Linux or UNIX. In the cloud data matters not OS.
Advantage Increased Data Safety Improved Compatibility Between Operating Systems – In cloud OS simply don’t matter. You can connect your Windows computer to the cloud and share documents with computers running Apple’s MAC OS, Linux or UNIX. In the cloud data matters not OS. Easier Group Collaboration Universal Access to Documents Latest Version Availability Removes the Device Dependency
Disadvantages Requires a constant Internet connection Doesn’t work well with low-speed connections May be slower than accessing application on Desktop. Limited features. Stored data might not be secured. If the Cloud loses your data, You’re screwed.
Who benefits from Cloud Computing Collaborator : Share your documents Road Warriors : Access it from anywhere. Cost-Conscious Users/IT Departments. Users with increasing needs
Who shouldn’t use? The Internet-Impaired Offline workers The Security Conscious Anyone married to existing application.
Barriers Technical Issues Business model Issues Internet Issues Security Issues Compatibility issues Social Issues
Types of Cloud Service Development Software as a Service (SaaS) – customers don’t pay for owning the software but for using it. Access to an application via API. Each organization served by the vendor is called tenant, and this type of arrangement is called multitenant architecture. The vendor’s servers are virtually partitioned so that each organization works with a customized virtual application instance. User requires no upfront in software licensing Application developer has to maintain only one application
Types of Cloud Service Development PaaS – Programming environment IaaS – Servers, Software and Spaces Web Services (mashups) Utility Computing
Companies in clouds Amazon Google App Engine IBM Salesforce.com Microsoft
Maturity Level of Web Application First – Traditional application service provider. Each user runs his own customized version on host server. Second – Each vendor hosts a separate instance for each customer. All instance use the same implementation. User personalization is provided by detailed configuration options. Third – Single instance of application. A unique user experience is provided via configurable metadata. Fourth – Vendor hosts multiple users on a load - balanced farm of identical instances. Patches and upgrades can be rolled out to the entire user base as easily as to a single user.
Collaboration - Planning Calendars - Google, Yahoo, Windows Live, Apple MobileMe, AOL, CalendarHub, Hunt Calendars, Famundo, eStudio, 30Boxes, Trumba, CalendersNet, Jotlet. Scheduling – Jiffle, Presdo, Diarised, Windows Live Events, Schedulbook, Acuity Scheduling, Appointment Quest, hitAppoint. Online Planning and Task Management – iPrioritize, Bla-Bla List, Hiveminder, Remember The Milk, Ta-daList,Tudo List, TaskTHIS, Vitalist, TracksLife, Voo2Do, HiTask, Zoho Planner.
Collaborating – Event management 123 Signup, Acteva, Conference.com, Cvent, Event Wax, RegOnline, eventsbot, Setdot, Tendenci. Whether small or big, both types of events may have the same management needs, the smaller event probably can’t afford the traditional type of event management software that the larger event has the budget for.
Collaboration – Contact Management Salesforce.com – SaaS Force.com – PaaS AppExchange – marketplace of add-on software for Salesforce.com. Developed by independent companies. bConnections, BigContacts, eStudio Contact Manager, Highrise, Apple MobileMeContacts,MyEvents, Plaxo, People Matrix, PipelineDeals, SalesBoom, SalesJunction.com, SalesNexus, Zoho CRM.