An expert guide to selecting the right cloud service model for your businessCloud computing is all the rage, allowing for the delivery of computing and storage capacity to a diverse community of end-recipients. However, before you can decide on a cloud model, you need to determine what the ideal cloud service model is for your business. Helping you cut through all the haze, Architecting the Cloud is vendor neutral and guides you in making one of the most critical technology decisions that you will face: selecting the right cloud service model(s) based on a combination of both business and technology requirements.* Guides corporations through key cloud design considerations* Discusses the pros and cons of each cloud service model* Highlights major design considerations in areas such as security, data privacy, logging, data storage, SLA monitoring, and more* Clearly defines the services cloud providers offer for each service model and the cloud services IT must provideArming you with the information you need to choose the right cloud service provider, Architecting the Cloud is a comprehensive guide covering everything you need to be aware of in selecting the right cloud service model for you.

Foreword xiiiPreface xvAcknowledgments xixAbout the author xxiChapter 1 Why Cloud, Why Now? 1Evolution of Cloud Computing 3Enter the Cloud 6Start-Up Case Study: Instagram, from Zero to a Billion Overnight 8Established Company Case Study: Netflix, Shifting from On-Premises to the Cloud 9Government Case Study: NOAA, E-mail, and Collaboration in the Cloud 10Not-for-Profit Case Study: Obama Campaign, Six-Month Shelf-Life with One Big Peak 10Summary 11Chapter 2 Cloud Service Models 13Infrastructure as a Service 13Platform as a Service 15Software as a Service 17Deployment Models 18Summary 22Chapter 3 Cloud Computing Worst Practices 23Avoiding Failure When Moving to the Cloud 23Migrating Applications to the Cloud 23Misguided Expectations 27Misinformed about Cloud Security 29Selecting a Favorite Vendor, Not an Appropriate Vendor 31Outages and Out-of-Business Scenarios 31Underestimating the Impacts of Organizational Change 33Skills Shortage 35Misunderstanding Customer Requirements 36Unexpected Costs 37Summary 39Chapter 4 It Starts with Architecture 41The Importance of Why, Who, What, Where, When, and How 41Start with the Business Architecture 43Identify the Problem Statement (Why) 47Evaluate User Characteristics (Who) 48Identify Business and Technical Requirements (What) 48Visualize the Service Consumer Experience (Where) 49Identify the Project Constraints (When and with What) 51Understand Current State Constraints (How) 52Summary 54Chapter 5 Choosing the Right Cloud Service Model 55Considerations when Choosing a Cloud Service Model 56When to Use SaaS 59When to Use PaaS 62When to Use IaaS 65Common Cloud Use Cases 68Summary 69Chapter 6 The Key to the Cloud: RESTful Services 71Why REST? 72The Challenges of Migrating Legacy Systems to the Cloud 74Summary 75Chapter 7 Auditing in the Cloud 77Data and Cloud Security 78Auditing Cloud Applications 78Regulations in the Cloud 80Audit Design Strategies 83Summary 85Chapter 8 Data Considerations in the Cloud 87Data Characteristics 87Multitenant or Single Tenant 92Choosing Data Store Types 95Summary 98Chapter 9 Security Design in the Cloud 99The Truth about Data in the Cloud 100How Much Security Is Required 101Responsibilities for Each Cloud Service Model 104Security Strategies 108Areas of Focus 110Summary 118Chapter 10 Creating a Centralized Logging Strategy 119Log File Uses 119Logging Requirements 120Summary 124Chapter 11 SLA Management 127Factors That Impact SLAs 127Defining SLAs 130Managing Vendor SLAs 132Summary 135Chapter 12 Monitoring Strategies 137Proactive vs. Reactive Monitoring 137What Needs to Be Monitored? 138Monitoring Strategies by Category 139Monitoring by Cloud Service Level 145Summary 147Chapter 13 Disaster Recovery Planning 149What Is the Cost of Downtime? 149Disaster Recovery Strategies for IaaS 151Recovering from a Disaster in the Primary Data Center 152Disaster Recovery Strategies for PaaS 157Disaster Recovery Strategies for SaaS 159Disaster Recovery Hybrid Clouds 160Summary 162Chapter 14 Leveraging a DevOps Culture to Deliver Software Faster and More Reliably 163Developing the DevOps Mind-Set 163Automate Infrastructure 165Automate Deployments 166Design Feature Flags 167Measure, Monitor, and Experiment 167Continuous Integration and Continuous Delivery 168Summary 170Chapter 15 Assessing the Organizational Impact of the Cloud Model 171Enterprise Model vs. Elastic Cloud Model 172IT Impact 173Business Impacts 174Organization Change Planning 178Change in the Real World 180Summary 181Chapter 16 Final Thoughts 183The Cloud Is Evolving Rapidly 183Cloud Culture 185New Business Models 186PaaS Is the Game Changer 187Summary 190Index 193