CLOUD COMPUTING

[seminar class]

Presented byBy,
P. Naveen Kumar

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What is Cloud Computing?
 Using or sharing the Computer Technology,
Hardware, and Software over the Internet.
In Brief
 Cloud Computing refers to both the applications delivered as services over the Internet and the hardware and systems software in the datacenters that provide those services.
Evolution
 The idea of cloud computing is evolved from parallel processing, distributed computing and grid computing. There is a bit similarity between them but they work differently.
Related Technologies
 Grid computing
 Utility Computing
Autonomic Computing
Cloud Computing defined…
 “A style of Computing in which dynamically scalable and often virtualized resources are provided as a service over the Internet”
History
 The underlying concept of cloud computing dates back to 1960s, when John McCarthy opined that "computation may someday be organized as a public utility.
 The actual term "cloud" borrows from telephony in that telecommunications companies.
 Amazon played a key role and in 2007, Google, IBM, and a number of universities embarked and by mid-2008, Gartner saw an opportunity for cloud computing "to shape the relationship among consumers of IT services.
 Architecture
 General Mechanism
Working Principle
 Classification
 Public Cloud
 Publicly accessible, self-service model:
 Access via well-defined & published Web Services(i.e. SOAP or REST).
 Access via management portal.-per-use.
Free or pay.
 No ongoing contract or commitment.
Private Cloud
 Emulate Public Cloud on private / internal resources.
 Gives benefit of Clouds (elasticity, dynamic provisioning, multiplexing) while:
 Maintaining control of resources (security).
 Meeting Corporate/Regulatory req.(governance).
 Option to scale out to Public Cloud. Hybrid Cloud
 Combination of private/internal and external Cloud resources.
 “Cloudbursting” to handle “Flash Crowds”.
 Provision additional resources from Public Clouds on-demand.
 Release resource when no longer needed.
 Can outsource non-critical functions.
 Architectural Layers
Software as a service (SaaS)
 Software as a service features a complete application offered as a service on demand. A single instance of the software runs on the cloud and services multiple end users or client organizations.
Public Storage Clouds –
Storage as a Service
 Amazon Simple Storage Service (S3)
 Amazon CloudFront
 Nirvanix Storage Delivery Network
 Mosso Cloud Files
 Microsoft Azure Storage Services
Platform as a service (PaaS)
 Platform as a service encapsulates a layer of software and provides it as a service that can be used to build higher‐level services. It involved, middleware, Integration, Messaging, Information, Connectivity setup.
Public App Clouds –
Platform as a Service
 Google AppEngine
 Microsoft Azure Services Platform
 Salesforce.com / Force.com
 Mosso Cloud Sites
 Heroku
Infrastructure as a service (IaaS)
 Infrastructure as a service delivers basic storage and compute capabilities as standardized services over the network.
 Servers, switches, routers, and other systems are pooled and made available to handle workloads of high‐performance computing applications.
Public Compute Clouds –
Infrastructure as a Service
 AmazonEC2
 GoGrid
 SliceHost
 Mosso Cloud Servers
Working with Cloud Computing
 Key features
 Agility
 Cost
 Device
 Multi-tenancy
 Reliability
 Scalability
 Security
 Maintenance
 Metering
 Cloud Computing Market
 Key Characteristics
Virtualization
Technology
 Virtualization technology works to handle on how the image of the operating system, middleware, and application pro‐created and allocated to a physical machine or part of the server stack away.
 Key Characteristics
Service‐Oriented Architecture (SOA)
 A service‐oriented architecture is essentially a collection of services that communicate with each other.
 The SOA is software or system architecture that addressing componentization, reusability, extensibility, and flexibility.
Statistics of Recent Growth
 Research Issues
 Interoperability
 Portability
 Reliability & Monitoring
 Data Security and Jurisdiction
 Innovative Cloud Pricing Models
 Innovative Service Models
 Pros and Cons
Conclusion & Future Scope
 Thus Cloud Computing provide a super – computing power. This Cloud of Computers extends beyond a single company or enterprise.
 In future, the security and reliability shall be improved by the introduction of certain globally accepted standards.