Building a Modular and Scalable Virtual Network Architecture with Amazon VPC
VPC Quick Start

Step 3. Add AWS Services or Other Applications

After you use this Quick Start to build your Amazon VPC environment, you can deploy additional Quick Starts or deploy your own applications on top of this AWS infrastructure. If you decide to extend your AWS environment with additional Quick Starts for trial or production use, we recommend that you choose the option to deploy the Quick Start into an existing Amazon VPC, where that option is available.

If you decide to deploy additional private subnets with dedicated network ACLs, make sure you review the configuration and adjust it accordingly. By default, the custom ACLs are configured to allow all inbound and outbound traffic to flow in order to facilitate the deployment of additional infrastructure. For more information, see Network ACLs and Recommended Network ACL Rules for Your VPC in the Amazon VPC documentation.