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by Michael Kavis
Architecting the Cloud: Design Decisions for Cloud Computing Service Models (SaaS, PaaS, and IaaS)
Cover
Contents
Title
Copyright
Dedication
Foreword
Preface
Acknowledgments
About the Author
Chapter 1: Why Cloud, Why Now?
Evolution of Cloud Computing
Enter the Cloud
Start-Up Case Study: Instagram, from Zero to a Billion Overnight
Established Company Case Study: Netflix, Shifting from On-Premises to the Cloud
Government Case Study: NOAA, E-mail, and Collaboration in the Cloud
Not-for-Profit Case Study: Obama Campaign, Six-Month Shelf-Life with One Big Peak
Summary
Chapter 2: Cloud Service Models
Infrastructure as a Service
Platform as a Service
Software as a Service
Deployment Models
Summary
Chapter 3: Cloud Computing Worst Practices
Avoiding Failure When Moving to the Cloud
Migrating Applications to the Cloud
Misguided Expectations
Misinformed about Cloud Security
Selecting a Favorite Vendor, Not an Appropriate Vendor
Outages and Out-of-Business Scenarios
Underestimating the Impacts of Organizational Change
Skills Shortage
Misunderstanding Customer Requirements
Unexpected Costs
Summary
Chapter 4: It Starts with Architecture
The Importance of Why, Who, What, Where, When, and How
Start with the Business Architecture
Identify the Problem Statement (Why)
Evaluate User Characteristics (Who)
Identify Business and Technical Requirements (What)
Visualize the Service Consumer Experience (Where)
Identify the Project Constraints (When and with What)
Understand Current State Constraints (How)
Summary
Chapter 5: Choosing the Right Cloud Service Model
Considerations When Choosing a Cloud Service Model
When to Use SaaS
When to Use PaaS
When to Use IaaS
Common Cloud Use Cases
Summary
Chapter 6: The Key to the Cloud
Why REST?
The Challenges of Migrating Legacy Systems to the Cloud
Summary
Chapter 7: Auditing in the Cloud
Data and Cloud Security
Auditing Cloud Applications
Regulations in the Cloud
Audit Design Strategies
Summary
Chapter 8: Data Considerations in the Cloud
Data Characteristics
Multitenant or Single Tenant
Choosing Data Store Types
Summary
Chapter 9: Security Design in the Cloud
The Truth about Data in the Cloud
How Much Security Is Required
Responsibilities for Each Cloud Service Model
Security Strategies
Areas of Focus
Summary
Chapter 10: Creating a Centralized Logging Strategy
Log File Uses
Logging Requirements
Summary
Chapter 11: SLA Management
Factors That Impact SLAs
Defining SLAs
Managing Vendor SLAs
Summary
Chapter 12: Monitoring Strategies
Proactive vs. Reactive Monitoring
What Needs to Be Monitored?
Monitoring Strategies by Category
Monitoring by Cloud Service Level
Summary
Chapter 13: Disaster Recovery Planning
What Is the Cost of Downtime?
Disaster Recovery Strategies for IaaS
Recovering from a Disaster in the Primary Data Center
Disaster Recovery Strategies for PaaS
Disaster Recovery Strategies for SaaS
Disaster Recovery Hybrid Clouds
Summary
Chapter 14: Leveraging a DevOps Culture to Deliver Software Faster and More Reliably
Developing the DevOps Mind-Set
Automate Infrastructure
Automate Deployments
Design Feature Flags
Measure, Monitor, and Experiment
Continuous Integration and Continuous Delivery
Summary
Chapter 15: Assessing the Organizational Impact of the Cloud Model
Enterprise Model vs. Elastic Cloud Model
IT Impact
Business Impacts
Organization Change Planning
Change in the Real World
Summary
Chapter 16: Final Thoughts
The Cloud Is Evolving Rapidly
Cloud Culture
New Business Models
PaaS Is the Game Changer
Summary
Index
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