AWS - Setting up a VPC with public and private subnets (III)

This is a network diagram of our Liferay cluster.  One ELB, two web servers configured as reverse proxies balancing traffic to the application servers, and an Amazon RDS instance as database choose. Liferay document library will be stored in an S3 volume.

There are other factors to be considered in this network deployment.  Availability zones and their impact in our portal will be one of them. If you are looking for help on setting up a Liferay cluster with higher availability requirements, we will be happy to help ( for a fistful of dollars, of course ) .