Mumbai

Lokesh Raghani

Vaibhav Kubadia

The cloud, is an expression used to describe a

variety of different types of computing concepts

that involve a large number

of computers connected through a real-time

communication network (typically the Internet).

What is cloud

Computing includes – designing, developing and building hardware and

software systems– processing, structuring, and – managing various kinds of information

by doing scientific research on and with computers; and creating and using communications and entertainment media.

What is computing

Introduction

• Cloud Computing means a type of Internet-based computing,

where different services such as servers, storage and

applications are delivered to an organization's devices through

the Internet.

• It’s a collection of networked hardware, software and

Internet infrastructure.

• Shared pool of configurable computing resources• On-demand network access• Provisioned by the Service Provider

• Remotely hosted

• Ubiquitous

• Low Cost Software

• On Demand Self-Service

• Resilient Computing

• Pay as much as you use

Characteristics

Software as a Service (SaaS)

• SaaS uses the Web to deliver applications that are

managed by a third-party vendor and whose interface

is accessed on the clients’ side.

• Most SaaS applications can be run directly from a Web

browser, without any downloads or installations

required.

• Gmail is one famous example of an SaaS mail provider.

Platform as a Service (PaaS)

• Developers gain with PaaS is a framework they can build upon to develop or customize applications.

• PaaS makes the development, testing, and deployment of applications quick, simple, and cost-effective.

• Similar to the way that you might create macros in Excel, PaaS allows you to create applications using software components that are controlled by a third-party vendor.

• PaaS is highly scalable , and users don’t have to worry about platform upgrades or having their site go down during maintenance.

Infrastructure as a Service � (IaaS)

• Cloud infrastructure services, known as “Infrastructure as a Service” �(IaaS), deliver computer infrastructure (such as a platform virtualization environment), storage, and networking.

• Instead of having to purchase software, servers, or network equipment, users can buy these as a fully outsourced service.

• Compared to SaaS and PaaS, IaaS users are responsible for managing more: applications, data, runtime.

• What users gain with IaaS is infrastructure on top of which they can install any required platforms. Users are responsible for updating these if new versions are released.

Cloud Service Models

Software as a Service (SaaS)

Platform as a Service (PaaS)

Infrastructure as a Service (IaaS)

Google App Engine

SalesForce CRM

LotusLive

Examples of Models

• Less Infrastructure

• Data on the platform

• Applications on the cloud

Purpose & Benefits

Cloud computing works using economies of scale:

• It potentially lowers the expense for start up companies

• Cost would be by on-demand pricing

Opportunities

• Dependence on others

• There are also issues relating to policy and access:

› What happens if the remote server goes down?

› How will you then access files?

› What in cases of users being locked out of accounts and

losing access to data?

• Performance and High Bandwidth Cost

Challenges

• Instant software updates and that too online

• Latest version availability

• No obsolete software and high upgrade costs

• Unlimited storage capacity

• Increased data reliability

• Universal document access

Advantages

• Requires a constant Internet connection

• Low Speed connections

• Features might be limited

• Sometimes can be slow

• Stored data can be lost

Disadvantages

• $180 billion Estimated global cloud services market by the end of 2015

• $131 billion Estimated global cloud services market by the end of 2013

• 50 million Number of physical servers in the world

• 60% Server workloads that will be virtualized in 2013

• 48% Percentage of the cloud market spent on advertising in 2012

• 21% Annual savings of users who move apps to the cloud

• 1/3 IT budgets to be spent on cloud computing in 2013

Statistics

As on 5th September 2013

Sources

• http://www.statetechmagazine.com/article/2013/09/13-cloud-computing-stats-cios

• http://apprenda.com/library/paas/iaas-paas-saas-explained-compared/

Thank You