1. EBS Snapshot cleaning up

2. VPC and 3 Tier Architect

3. Database Failover

4. Computing Service, VM, Container and Lambda

5. API CRUD Read Replica Secret Manager

6. API CRUD S3

7. API CRUD Monitoring and Incidence Response

8. Data Temperature and Management

9. VPC and Cloudformation Mapping

10. S3 Access VPC Endpoint vs. NAT

11. 3 ways to connecting to EC2 in private subnet