Cloud Computing Security, 2nd Edition

CHAPTER 2

An Overview of Cloud Computing

William Stallings

Independent Consultant

Brewster, Massachusetts

Contents

2.1 Introduction

2.2 Cloud Computing Elements

2.3 Essential Characteristics

2.4 Cloud Services

2.4.1 Software as a Service

2.4.2 Platform as a Service

2.4.3 Infrastructure as a Service

2.4.4 Other Cloud Services

2.4.5 XaaS

2.5 Cloud Deployment Models

2.5.1 Public Cloud

2.5.2 Private Cloud

2.5.3 Community Cloud

2.5.4 Hybrid Cloud

2.6 NIST Cloud Computing Reference Architecture

2.6.1 Cloud Computing Actors

2.6.2 Cloud Provider Architectural Components

2.7 ITU-T Cloud Computing Reference Architecture

2.7.1 Cloud Computing Actors

2.7.2 Layered Architecture

2.7.3 ITU-T Cloud Computing Functional Reference Architecture

2.8 Network Requirements ...