AWS Well-Architected Framework
The Well-Architected Framework provides a structured approach to evaluating and improving cloud architectures. It's built around six pillars that represent the fundamental building blocks of excellent cloud architecture.
The Six Pillars
┌──────────────────────────────────────────────────────┐
│ WELL-ARCHITECTED FRAMEWORK │
│ │
│ ┌─────────────────────────────────────────────────┐ │
│ │ │ │
│ │ 1. Operational Excellence │ │
│ │ 2. Security │ │
│ │ 3. Reliability │ │
│ │ 4. Performance Efficiency │ │
│ │ 5. Cost Optimization │ │
│ │ 6. Sustainability │ │
│ │ │ │
│ └─────────────────────────────────────────────────┘ │
│ │
│ Each pillar includes: │
│ - Design principles │ │
│ - Key questions │ │
│ - Best practices │ │
│ - Improvement plan │ │
└──────────────────────────────────────────────────────┘
1. Operational Excellence
Run and monitor systems to deliver business value and continually improve processes. Focus on automation, infrastructure as code, monitoring, and iterative improvement. Use tools like CloudFormation, Systems Manager, and CloudWatch.
2. Security
Protect data, systems, and assets through the shared responsibility model. Implement defense in depth with IAM, encryption, network security, and detection services. Automate security responses.
3. Reliability
Ensure workloads perform correctly and recover from failures. Design for fault tolerance, implement monitoring, and have disaster recovery plans. Use Auto Scaling, Multi-AZ deployments, and backup strategies.
4. Performance Efficiency
Use computing resources efficiently to meet system requirements. Select the right resource types, optimize configurations, and use managed services. Regularly evaluate new AWS services and features.
5. Cost Optimization
Run systems at the lowest possible price point. Understand spending patterns, select pricing models, scale appropriately, and continuously review costs using Cost Explorer and Budgets.
6. Sustainability
Minimize the environmental impact of running cloud workloads. Optimize workload efficiency, use managed services, and consider the carbon footprint of your architecture choices.