Is it possible to have private subnets within a VPC?

Private subnets within a Virtual Private Cloud (VPC) are indeed possible and are a fundamental component of VPC architecture in AWS. A private subnet is defined as a subnet that is not directly accessible from the internet. Instances in a private subnet can communicate with the internet indirectly, typically via a network address translation (NAT) gateway or NAT instance that is placed in a public subnet. This setup helps maintain a secure environment by limiting direct exposure to the internet.

When you create a VPC, you can design the network to include both public and private subnets, allowing for the segregation of resources based on their accessibility needs. For example, web servers that require internet traffic typically reside in a public subnet, while databases or application servers that should remain private can be placed in a private subnet. This architecture enables better security controls and traffic management tailored to specific application requirements.

Overall, the ability to create private subnets within a VPC enhances the flexibility and security of your cloud architecture on AWS.