EC2, VPC, IAM, Route53, ALB/NLB, Auto Scaling, S3, EBS, EFS, RDS, DynamoDB, Lambda, API Gateway, Containers & Platform Engineering: Docker, ECS, EKS, Kubernetes, Deployments. IAM, Security Best Practices, Troubleshooting, Log Analysis, Root Cause Analysis (RCA), Incident Resolution, CI/CD Pipeline Debugging, Infrastructure Issue Analysis, Ownership, Stakeholder Communication, Collaboration, Agile Delivery.