Cloud Computing Service and Deployment Models:

Cloud

_Computing

Service

and

_Deployment

Models:

Layers

and

_Management

Alberto

M.

Bento

University

of

_Baltimore,

USA

Anil

K.

_Aggarwal

Detailed Table of

Contents

Foreword Xlll

Preface xvn

Shamim

Hossain,

IBM

_Corporation,

Australia

This

_chapter

introducestermsand

_{terminologies}

associated with cloud

_computing

fromavendor

neutral

perspective.

Readers are

gradually

introduced to cloud

computing

elements,

which paves theway for

better

_{understanding}

in later

_chapters.

Shamim Hossain, IBM

_Corporation,

Australia

In this

_chapter,

the author takesacloser lookatthis

important

service which is considered asthe back¬ bone

of cloud

_computing.

Cecelia

_Wright

Brown,

University

of

Baltimore. USA

Kofi Nyarko, Morgan

State

_University,

USA

The purpose of this

chapter

istodiscuss the

_origin

and evolution of

SaaS,

as well asto describe its role in

_{today's enterprise}

environment. This

_{chapter begins}

with a

description

of the evolution of

SaaS,

fol¬ lowed

_by

the architecture,

_{implementation,}

and associated business model.

Chapter

2

Infrastructure as aService 26

Chapter

3

Softwareas a Service

(SaaS)

50

Chapter

4

Managing

the Cloud for Information

_Systems

_Agility

Haiho

_Yang,

Victoria

_University

_of

Wellington.

New Zealand Sid

_Huff,

Victoria

_{University of Wellington,}

New Zealand

Mary

Tate, Victoria

_{University of}

_Wellington,

New Zealand

This research aims at

_providing

a

_{conceptualization}

of IS

_agility

basedonresearchto

date,

and examin¬

ing

how cloud

_{computing might}

facilitate such

_agility.

Based on a literature

review,

cloud

computing

services

_{(IaaS, PaaS,}

and

_SaaS)

are

analyzed against multiple

_aspects

of IS

agility. Only

IaaS

is found

to have the

_{potential providing}

consistent

_agility,

whereas

_agility

at PaaS and SaaS levels is more determined

_{by human/organization}

factors.

_{Lastly suggestions}

for businesses and directions to future

research are

proposed.

Chapter

5

Holistic Investment Framework for Cloud

_Computing:

A

_{Management-Philosophical}

_Approach

Based

on

_{Complex Adaptive Systems}

94

Marc

_{Rabaey, University}

_of

Hasselt,

_Belgium

This

_chapter

_presents

an investment

framework,

which takes into account

_global,

business, IT,

and

operational strategies,

so that cloud

computing projects

have more chance to succeed. The need for

flexibility

in the investments is addressed

_by

the real

_option

_valuation,

which is

_placed

inthe context of the authors' holistic investment framework for cloud

_computing.

Section 2

Cloud Services

_Development

and Framework

Chapter

6

A

_{Systems Approach}

to Cloud

_Computing

Services 124 Anil

_{Aggarwal, University of}

Baltimore,

USA

This

_chapter

_presents

a

_systems

approach

to cloud

_computing

services.

_{Specifically,}

it

examines issues

in the contextof the

_system

_development

life

_{cycle (SDLC).}

For

_completeness

_{purposes, the author} discusses issues in relationto

SDLC; however,

in

practice,

each user will have to customize this ap¬

proach

to

suit

one's

_{application(s).}

Chapter

7

Requirements Engineering

for Cloud

_{Application Development}

137

Holger

Schrodl,

University ofMagdeburg, Germany

Stefan

Wind,

University ofAugsburg, Germany

This

_chapter

examines

selected,

established

_{requirements engineering}

methods in orderto

_study

the

extent towhich

_they

can be

applied

tothe

specific requirements

of cloud-based solutions.

Furthermore,

it

_develops

a

comparison

framework

containing

the

features of cloud

computing.

Chapter

8

Cloud

_Computing:

A Decision Framework for Small Businesses 151

Stephen

H.

Kaisler,

_{i_SW Corporation,}

USA

William H.

_Money,

The

_{George Washington University,}

USA

Stephen

J.

Cohen,

_Microsoft

Public Sector

Services,

USA

This

_{chapter develops}

a

preliminary

decision frameworktoassist_managers who are

determining

which

cloud solution matches

their

_{specific requirements}

and

_evaluating

the numerouscommercial claims

(in

Chapter

9

Integrating

the Cloud Scenarios and Solutions 173

Venky

Shankararaman,

Singapore Management University, Singapore

hum

_Eng

Kit,

Singapore Management University,

Singapore

In this

_chapter,

the author

_briefly

introduces the various cloud

_computing

architecture

_{layers, provides}

detailed cloud

_integration

scenarios,

and discusses

some of

the

challenges

and

_present

some

integration

solutions. The author also

_{provides points}

for

consideration

to

_help

organizations

decide

_appropriate

integration

solutions

to

suit

their

needs.

Section 3

Security

and

_Legal

Issues in Cloud

_Computing

Chapter

10

Cloud

_{Computing: Security}

Concerns and Issues 191

Shanlanu

Pal,

The

_{University of}

Calcutta,

India

The

_objective

ofthis

_chapter

isto

discuss

and understandthe basic

_security

and

_{privacy challenges}

ofa

cloud

_computing

environmentasthe

_security

of cloud

_computing

is the

_greatest

_challenge

for

_delivering

asafer cloud environment for both the service

providers

and the servicecustomers.

Chapter

11

Security

in

Cloud

_Computing

208

AlpanaM.

Desai,

University of

Alaska

_Anchorage,

USA Kenrick

Mock,

_{University of}

Alaska

_Anchorage,

USA

In this

_chapter,

the authors discuss the

_{technical, legal,}

and

_{policy/organizational security}

risks of cloud

computing. They

review

_{recommendations/strategies}

for

_managing

and

_{mitigating security}

threats

in cloud

_computing.

The authors also

_present

_{vendor-specific}

solutions and

_strategies

that cloud service

providers

are

implementing

for

mitigating security

risks in cloud

computing.

Chapter

12

Cloud

_{Computing Security}

and Risk

_Management

222 Yoshito

Kanamori,

University of

Alaska

_Anchorage,

USA

Minnie Yi-Miin

_Yen,

_{University of}

Alaska

_Anchorage,

USA

In this

_chapter,

the authors first

_{clarify misperceptions}

_by

_introducing

the

newthreats and

challenges

involved

in

cloud environments.

_{Specifically,}

_security

issues

and concerns are

_depicted

in three

_practi¬

cal scenarios

_designed

to illuminate the different

_security

_problems

in each

cloud

_deployment

model.

Section 4

Legal

Issues in Cloud

_Computing

Chapter

13

Key Legal

Issues with Cloud

_Computing:

A UK Law

_Perspective

242

The

_chapter

considers the

_{key legal}

issues with cloud

_{computing including:}

₍₁₎

_liability

for service

failure;

(2)

service levels and service

_{credits; (3)}

intellectual

_{property issues;}

and

_{(4) jurisdiction}

and

governing

law.

Chapter

14

The

_{Legal Implications}

of Cloud

_Computing

257

Michael

L.

_{Kemp, University of}

Richmond,

USA Shannon

Robb,

University of

Richmond,

USA P. Candace

_Deans,

_University

_of

_Richmond,

USA

The purpose of this

chapter

istoexamine thecurrent

legal

environment of cloud

_computing.

As the cloud

platform

continues to

_evolve,

_companies

will

find

the need to address the business

_risks,

_particularly

legal

issues which will be of

_paramount

concern.This

_chapter

discusses the

_legal

dimensions of

cloud

computing

from the

_perspective

of three L's:

_Location,

_Litigation,

and

_Liability.

Section5

Economic

_Impact

of Cloud

_Computing

Chapter

15

Business

_Impacts

of Cloud

_Computing

274

Cameron

Deed,

Yellowfin,

Australia

Paul

_{Cragg, University of}

_Canterbury,

NewZealand

This

_chapter

_explores

the business

_impacts

associated with

the

_adoption

of

a

cloud-based

business

intelligence application.

A

_generic

benefits

_{management framework}

was

adopted

to

_guide

the

_study

of five firms. Numerous

_{types of benefit}

were

identified,

including strategic, managerial,

operational,

and

functional

and

_support.

Chapter

16

An Economic

_Analysis

of Cloud: "Softwareas a Service"

(SaaS) Computing

and "Virtual

Desktop

Infrastructure"

_(VDI)

Models 289 Wei Nein "William"

_Lee,

_{University of}

_Houston,

USA

This

_{chapter provides}

_specific

return on

investment

analysis

and business

case studies

leveraging

the

application

and value

_proposition

of

these solutions. In

_summary,

the

_{analysis presented}

_{suggests that}

an

inevitable

shift from

legacy

network architectures to SaaS

and

VDI

_computing

is

the

_path

forward.

Chapter

17

The

Economics

of Cloud

_Computing

296

Federico

Etro,

University of

Venice, Ca'Foscari,

_Italy

This

_chapter

examines the

economic

_impact

of

the diffusion ofa new

technology

as cloud

computing.

This will allow firms to rent

_computing

_powerand

_{storage from service}

_providers,

and to pay on de¬

mand,

with a

profound impact

on

the

cost structureof all the

industries,

turning

someof the fixed costs

Section

6

Applications

and Advances in Cloud

Computing

Chapter

18

Patterns of

Tactical

Networking

Services 311 Alex

_Bordetsky,

Naval

_Postgraduate

School, USA

In this

_chapter,

the author describes

_findings

and

_prototypes

of

_emerging

tactical

_networking

services,

which hewasableto

identify

basedon

unique

experimental

studies of tactical

networking.

The described

findings

should

be

_helpful

in

_structuring

tactical cloud

services

for the

_variety

manned-unmanned

sensor

networking

applications.

Compilation

of References About the

Contributors

Index

330

358 365