Cloud

Computing

Bharat BodageING Softwares,Pune

Contents

What is Cloud Computing ?Features of Cloud Computing

Types of CloudsDeployment Models

Key Technology : VirtualizationAdvantages of Cloud ComputingCloud Computing Market SizeExamples of Cloud ComputingDifficulties for Cloud Computing

References

The term “Cloud” is analogical to “Internet” “ Cloud Computing is internet based computing where virtual shared servers provide Software, Infrastructure, Platform, Devices and other resources and hosting to customers on a pay-as-you-use basis. ”

What is Cloud Computing ?

Virtualized

Features of Cloud Computing

Application Programming Interface (API)Multi-Tenancy

Pay-as-per-use

Scalability

Security

Maintenance

Easy to Use

Architecture of Cloud Computing

Front EndIt comprises to client’s device (or computer network) and some applications needed for accessing cloud computing system.

Back EndIt refers to cloud itself. It includes various computer machines, data storage system and servers.

Middleware is used to allow computers that are connected on network to communicate each other. Middleware administered all the information about client’s demand and traffic ensuring smooth functioning of system.

Types of Clouds

SaaSSoftware as a

Service

PaaSPlatform as a

Service

IaaSInfrastructure as a

Service

SaaSSoftware as a

Service

Software functionality is offered within cloud

Quite Expensive

Increasingly popular with SMEs/SMBs(Small and Mid size Businesses)

Service delivered through browser No Hardware or Software to manage

Ex: SalesForce CRM, Google Apps, Wipro w-SaaS

PaaSPlatform as a

Service

Provides Platform where applications and services can be developed and hosted

Provides API (Application Programming Interface)

Service delivered through browser

Platform management is critical task

Ex: Google App Engine, Window Azure (platform)

IaaSInfrastructure as a

Service

Provides Resources as services

Virtualized Environment

Foundation for SaaS and PaaS

Whole cloud information viz. servers, routers, hardware based load balancing, firewalls and other network equipment's are provides IaaS

Ex: Amazon EC2, SQL Azure, FlexiScale

Public Cloud: It is traditional cloud computing where resources are dynamically provisioned on a fine grained, self service basis over internet of from off-site third party provider.

Deployment Models

Community Cloud: If several organizations have similar requirement and seek to share infrastructure to realize the benefits of cloud computing then community cloud can be established. This is having higher cost than public cloud because this is having only fewer users as compared to public cloud. However this option may offer higher level of privacy, security or policy compliance.

Deployment Models Contd…

Hybrid Cloud: It means two separate clouds joined together (public, private, internal, community) or combination of virtualized cloud server instances used together with real physical hardware. Hybrid cloud is use of physical hardware and virtualized cloud server instances together to provide a single common device.

Private Cloud: Private cloud describe offering’s that deploy cloud computing on private networks. It consists of applications or virtual machines in company’s own set of hosts. Hence to recover from failure, ability to scale up or down depending upon demand.

Key Technology: Virtualization

Hardware

OS

App App App

Hypervisor/ VM Impl.

OS OS

Virtualized Stack

Hardware

Operating System

App App App

Traditional Stack

Virtual machine is to abstract the hardware of single computer into several different executing environment by creating illusion that each separate execution environment is running on its own private machine.

Advantages of Cloud Computing

Pay-as-per-Use

Location Independence

Increased Flexibility

Abstraction (Allows enterprise to focus on its core) Resource Sharing

Instant scalability

Cloud Computing Market Size

According to study conducted by Forbes, the global market for enterprise cloud based services will grow from $ 12.1 billion in 2010 to $ 35.6 billion in 2015. The year-on-year growth rate will be 43% in 2011, but it will decrease to 13% over next five years. Software as a Service(SaaS) will account for 70% of revenue in 2010, while 30% will be related to Infrastructure as a Service(IaaS). Another report states worldwide revenue from public IT cloud services exceeded $ 16 billion in 2009 and is forecasted to reach $ 55.5 billion in 2014, representing a compound annual growth rate(CAGR) of 27.4 %.

Examples of Cloud Computing

The NY Times Amazon EC2 (Elastic Compute Cloud) Nasdaq Amazon EC2

ESPN Right Scale using Amazon EC2 CSS Amazon EC2

British Telecom3 Tera

Taylor WoodrowGoogle Apps

Major League BaseballJoyent

Difficulties for Cloud Computing

Continuous high availabilityConsistencyPerformance IssuesLegal and political problem of data store

and translation across regionScalability of all componentsSecurity

Overview

Overview

References

www.tecno-pulse.com

www.luitinfotech.com

The Future of Cloud Computing -Lutz Schubert

A Short Introduction to Cloud Computing

-David Chappell

Thank You !!!