AWS - Pillars of Well Architected Framework

The pillars of well architected framework

1. Operational Excellence: Ability to run and maintain system, supporting business requirements and technology changes and continually improve supporting process and procedures. 

• Monitoring system health

• Business Matrix
• Customer Experience Matrix 
• System Matrix 
• Operational Matrix

It encompasses areas such as automation, change management, and continuous improvement.

AWS Services: AWS CloudFormation, AWS CloudTrail, AWS Config, AWS Systems Manager, AWS CodePipeline, AWS CodeDeploy, AWS CodeBuild, AWS CloudWatch, AWS Lambda, AWS Step Functions.

2. Security:

It covers areas like identity and access management, data protection, and incident response.

AWS Services: AWS IAM, AWS KMS, AWS CloudTrail, AWS WAF, AWS GuardDuty, AWS Secrets Manager, AWS Certificate Manager, AWS Security Hub, AWS Config, AWS Network Firewall, AWS Shield.

3. Reliability: (Hint: HA + DR + Backups)

It covers areas like fault tolerance, high availability, and backup and recovery strategies.

AWS Services: AWS Auto Scaling, AWS Elastic Load Balancing, AWS Route 53, AWS CloudWatch, AWS Backup, AWS CloudFormation, AWS CloudTrail, AWS Lambda, AWS Step Functions, AWS SNS, AWS SQS.

4. Performance Efficiency:

It covers areas like selection of compute resources, caching, and monitoring.

AWS Services: AWS EC2, AWS Auto Scaling, AWS ElastiCache, AWS CloudWatch, AWS CloudFront, AWS Global Accelerator, AWS PrivateLink, AWS Transit Gateway, AWS Lambda, AWS EFS, AWS FSx.

5. Cost optimization:

It covers areas such as cost-effective resource selection, monitoring expenditure, and identifying opportunities for cost savings.

AWS Services: AWS EC2 Spot Instances, AWS Auto Scaling, AWS Cost Explorer, AWS Trusted Advisor, AWS Budgets, AWS Reserved Instances, AWS Savings Plans, AWS Organizations, AWS Cost and Usage Reports, AWS Lambda, AWS CloudWatch.

6. Sustainability Pillar:

It covers areas like carbon footprint reduction, energy efficiency, and resource optimization.

AWS Services: AWS Graviton instances, Amazon EBS gp3 volumes, AWS Instance Scheduler, AWS Cost Explorer, AWS Trusted Advisor, AWS Compute Optimizer, AWS Ground Station, AWS Snowcone, AWS Lambda, AWS Batch, AWS Glue, AWS Athena.
Weekend scheduled shutdown of EC2s if not in use.

Key word to remember: OSCAR (Replace A by P)

Good articles you should read: 
https://dzone.com/articles/pillars-of-aws-well-architected-framework
https://builder.aws.com/content/2eIXjpD5TI2j00UWUHx159mO9Mw/aws-well-architected-framework-comprehensive-guide
https://www.aws.ps/aws-well-architected-framework/ 
OSCAR (replace A by P)