图书简介
Cloud Technologies: An Overview of Cloud Computing Technologies for Managers introduces cloud-based systems and expertly explains how these technologies have changed the way organizations approach and implement their computing infrastructure. Introducing the reader to an overview of cloud computing, this book smoothly addresses and presents business related considerations such as Service Level Agreements, elasticity, security, audits, and other practical implementation issues. Furthermore, it covers additional topics such as automation, infrastructure as code, DevOps, and orchestration. Comprised of 10 chapters, the author ensures cloud computing concepts are explained in a detailed, understandable manner that is clear to the reader, ensuring a firm understanding. Aimed at all levels of managers working in IT, Cloud Computing is embedded with topics that are important to managers, including cost savings and enhanced capabilities together with different models for implementing cloud technologies and tackling cloud business concerns.
Preface Acknowledgments Chapter 1: What is Cloud Computing? 9 Why Cloud Computing? 10 Cloud Computing’s Focus 10 Cost Reduction 11 Capacity Planning 13 Organizational Agility 15 How is Cloud Computing Hosted? 16 Private Cloud Deployment 16 Public Cloud Deployment 17 Hybrid Cloud Deployment 17 What are the Different Types of Cloud Solutions? 18 Software as a Service (SaaS) 18 Benefits of SaaS Solutions 19 Platform as a Service (PaaS) 19 Infrastructure as a Service (IaaS) 21 Benefits of IaaS Solutions 23 SaaS vs. PaaS vs. IaaS: A Review 23 Recovery as a Service (RaaS) 24 What are General Benefits of Cloud Services? 25 What are General Disadvantages of Cloud Services? 26 What is the History Behind Cloud Computing? 26 Historic Perspective of Hardware Related to Cloud Computing 29 Historic Perspective of Software Related to Cloud Computing 30 SOA: A new way of doing old things 31 SOA Explained in Terms of Lego Blocks 32 Summary of Chapter 1 34 References 36 Bibliography 36 Chapter 2: Who Uses the Cloud? 38 Individuals Users 38 Public Cloud Subscription Storage for Individuals 40 Private Cloud Storage (PCS) for Individuals 41 Hosted Personal Cloud Storage Using Third Party Hardware 43 Public Cloud vs. Personal Cloud Storage 44 Small and Medium Enterprise (SME) Users 46 How Can Cloud Computing Save SMEs Money? 46 What Cloud Computing Features Appeal to SMEs? 47 SME Cloud Software 48 Corporate Managers and Users 73 Organizational Users of Cloud Computing 74 Summary of Chapter 2 75 References 76 Bibliography 76 Website Bibliography 77 Accounting Software 77 CRM Software 77 Data Analytics 77 ERP for SMEs 77 Help Desk 77 HR Software 78 Office Software 78 Project Management Tools 78 Purchasing and Procurement 78 Social Media 79 Chapter 3: What is Virtualization? 80 Hardware Virtualization 81 Hypervisors 82 Types of Hardware Virtualization 84 Hardware Virtualization Vendors and Products 86 Hardware Virtualization Benefits 87 Operating System Virtualization 88 Operating-system-level Virtualization (Containerization) 89 Containerization software 90 Containers vs. Virtual Machines 92 Container Cloud Practices 93 Storage Virtualization 94 DAS (Direct Attached Storage) 95 SAN (Storage Area Networks) 97 NAS (Network Attached Storage) 98 Storage virtualization techniques 99 Summary of Chapter 3 101 References 101 Bibliography 101 Chapter 4: Can the Cloud Help Operations? 103 Load Balancing 103 Load Balancing Algorithms 105 Hardware versus Software Load Balancing 111 Cloud-based Balancing 112 Cloud Load Balancing versus DNS Load Balancing 113 Scalability and Elasticity 114 Elasticity in Cloud environments 116 Challenges for Elasticity 116 Benefits of Cloud Elasticity 119 Summary of Chapter 4 123 References 124 Bibliography 124 Chapter 5: How are Clouds Managed? 125 Automation 125 Orchestration 126 Automation Tasks 127 Implementing Orchestration with IaC 129 IaC Example 131 IaC Tools 132 Cloud Provider Resource Management 135 Access Control for Resource Management Tools 140 Customized policies 141 APIs and SDKs 141 APIs 141 SDKs 143 SDKs and APIs 143 Cloud Backup and Replication 144 Cloud Backup 144 Cloud Backup Processes 146 Cloud Backup Drawbacks 147 Cloud Backup Vendors 148 Cloud Replication 150 Replication Technologies 152 DRaaS 152 Summary of Chapter 5 154 References 155 Bibliography 155 Website Bibliography 156 Backup Providers 156 DRaaS Providers 156 IaC Providers 157 Chapter 6: What are Cloud Business Concerns? 158 Monitoring and Console Tools 159 Resource Consumption Monitoring 159 Planning for Monitoring 160 Cloud Monitoring Tools 161 Monitoring Challenges 164 Cost monitoring 165 Costs Associated with Zombie Resource Instances 168 Service Level Agreements (SLAs) 171 SLA Sources 171 SLA Components 172 SLA Metrics 173 Other Performance considerations 178 Performance Failure Penalties 178 SLA Data Ownership Clause 179 Data Disposition 181 Data Breaches 182 Governmental Access Requests 183 SLA Revisions 183 Transferring SLAs 184 More on SLAs 184 Billing 185 Amazon Billing 187 Third Party Billing Tools 187 Summary of Chapter 6 188 References 189 Bibliography 189 Website Bibliography 190 Cost and Monitoring Software 190 Zombie Instance Management Software 191 Chapter 7: How are Business Applications in the Cloud Managed Safely? 192 Cloud Vulnerabilities 192 Cloud Security Architecture 193 IaaS Security Architecture 194 PaaS Security Architecture 198 SaaS Security Architecture 201 Access and Identity Control in the Cloud 202 Identity Governance 204 IAM Considerations for Developers 205 Identity Provisioning 206 Cloud Licenses 207 IAM with Third Party Vendors 208 Identity and Access Management Products 211 Identity Management Standards 213 Summary of Chapter 7 217 References 218 Bibliography 219 Website Bibliography 219 Identity Management 219 Chapter 8: What is Cloud Governance? 221 IT Governance Overview 221 IT Governance Boards 223 IT Governance Frameworks 224 IT Governance in the Cloud 232 Choosing a Governance Framework 234 Cloud Risk Factors Related to Governance 234 IT Audit Committees 236 IT Auditor 236 IT Controls 238 End-User Controls 241 Shadow IT 243 Acceptable Risk 244 SOA Governance 245 Ensuring Secure Cloud Data 246 Cloud Provider Data Safety Measures 247 Cloud Encryption 248 Symmetric Key Encryption 250 Asymmetric Key Encryption 251 Other Encryption Methods 254 Secure Sockets Layer (SSL) 254 Key Management 257 Key Management System Products 259 Summary of Chapter 8 260 References 261 Bibliography 261 Chapter 9: What other Services Run in the Cloud? 263 DevOps 263 Cloud-based Problem-Solving Approaches 270 Microservices 274 Cloud Database Applications 276 Cloud Data Models 277 Cloud Database Typical Features 279 DBaaS Product Examples 279 Cloud Analytics Services 282 Hadoop 285 Hadoop in the Cloud 286 Open Source Private Cloud Software 288 OpenStack Overview 289 OpenStack Components 290 Other Services 291 Compute Services 291 Application Services 292 Summary of Chapter 9 292 References 293 Bibliography 293 Website Bibliography 294 Data Analytics Tools 294 DBaaS 294 DevOps 295 Hadoop Competitors 295 Private Clouds 295 Virtual Databases 296 Chapter 10: What is the Cloud Future? 297 NoOps 297 Everything as a Service (EaaS) 298 Zero Knowledge Cloud Storage 298 Serverless Architecture 299 Multicloud 299 Small Business Clouds 300 Machine Learning 300 Internet of Things (IoT) 302 Cloud Computing as a Utility 303 Cloud Streaming Services 303 Edge Computing 303 Fog Computing 304 Summary of Chapter 10 306 References 307 Bibliography 308 Glossary Index
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