it's smarter to rent

than to buy ….

Agenda

Introduction

What is Cloud Computing?

Cloud service models

Software as a Service (SaaS)

Platform as a Service (PaaS)

Infrastructure as a Service (IaaS)

Cloud implementation types

Advantages of Cloud Computing

Dis-Advantages of Cloud Computing

Conclusion

What is Cloud Computing?

DEFINITION :

Cloud Computing is the type of Internet-based

computing where different services such

as Servers,Storage are delivered to an organization’s

computers and Devices through the Internet.

Cloud Service Layers

It is an application that can be accessed from anywhere on

the world as long as you have computer(or any device that

provides internet) with an internet connection.

They have a specific features such as SSL encryption,a

cryptographic protocol.

Eg:G-mail,Yahoo mail ….

SAAS

They deliver a Computing Platform typically including

operating system,Programming Language …..

It is the Platform for developers to write and create their

own Application.

Eg:Salesforce.com,Windows Azure ….

PAAS

It is also known as Hardware as a service.It is a computing

power that can rent for limited period of time.

Eg:Firewalls,Amazon EC2 …..

IAAS

Cloud Service models - Comparison

Modes of Clouds

Public Cloud:• Computing infrastructure is hosted by cloud vendor at the vendors premises.• and can be shared by various organizations.• E.g. : Amazon, Google, Microsoft, Sales force.

Private Cloud:• The computing infrastructure is dedicated to a particular organization and not shared

with other organizations.• more expensive and more secure when compare to public cloud.• E.g. : HP data center, IBM, Sun, Oracle, 3tera.

Hybrid Cloud:• Organizations may host critical applications on private clouds.• where as relatively less security concerns on public cloud.• usage of both public and private together is called hybrid cloud.

Community Cloud:• The cloud is shared by two or more private,public,or community clouds.• E.g. :group of schools come under specific University.

Cloud implementation types

Cloud Operating Systems:

• Eye OS

• Amoeba OS

• Glide OS

• Start force

• myGoya

• CorneliOS

• Lucid Desktop

• Cloudo, Ghost, Zimdesk, Start force etc.,

Advantages of Cloud Computing :

• Lower Computing Cost

• Improved Performance

• Reduced Software Cost

• Instant Software Updates

• Unlimited Storage Capacity

• Increased Data Reliability

• Device Independence and the “always on!, anywhere

and any place”

• Free From Maintenance …..

DIS-ADVANTAGES OF CLOUD

COMPUTING :

• Storage Performance will never be as fast as

LOCAL DRIVES because they are stored in

Internet.

• Some users will not believe in the File security in

the cloud.

BY

HARI SHANKAR K

AMIRTH RAJ T