deploying application on below architecture

step-1 VPC creation

step-2 create security group as below

step-3 creating auto scalling group and deploying instance in private subnets and creating a bastion host on public subnet

step-4 install depedences of application on private instances using bastion

do same on 2nd instance also

step-5 create s3 bucket, RDS and read replica

s3

RDS

Read replica in diffrent az

step-6 create a IAM role to give instance access of s3 and attch that role to private instances

step-7 install mysql client and access rds

step-8 run application on both instances

step-9 Test with Application Loadbalancer

step-10 create cloud front