Great explanation and helpful material

Just passed my certification exam, most questions came from Aurora (important), RDS (important), Application and Network load balancers, SQS, Serverless infrastructure, High performance architectures, VPC, Ec2, Storage gateways(very important), S3 lifecycle to cost-effective, Fsx lustre(important), EFS(important), Auto Scaling, Cloudfront, Iam policies,roles and service policy.