What should the solutions architect do to meet these requirements?
Deploy a NAT instance in the VPC. Route all the internet-based traffic through the NAT instance.
Deploy a NAT gateway in the public subnets. Modify the private subnet route table to direct all internet-bound traffic to the NAT gateway.
Configure an internet gateway and attach it to the VPModify the private subnet route table to direct internet-bound traffic to the internet gateway.
Configure a virtual private gateway and attach it to the VPC. Modify the private subnet route table to direct internet-bound traffic to the virtual private gateway.
Explanations:
A NAT instance is a viable option for allowing instances in a private subnet to access the internet, but it requires more operational overhead for maintenance and scaling compared to a NAT gateway. Moreover, NAT instances can become a single point of failure if not configured properly.
A NAT gateway allows instances in a private subnet to access the internet securely without exposing them directly to the internet. It is managed by AWS, reducing operational overhead, and provides better reliability and scalability than a NAT instance.
An internet gateway allows direct access to the internet, which is unsuitable for instances in a private subnet that should not be publicly accessible. Routing private subnet traffic through an internet gateway would expose the instances to potential security risks.
A virtual private gateway is used for connecting a VPC to an on-premises network through a VPN, not for allowing outbound internet access. Routing traffic through a virtual private gateway would not provide the necessary access to the internet while maintaining security.
I categorize that the answer is:
Deploy a NAT gateway in the public subnets. Modify the private subnet route table to direct all internet-bound traffic to the NAT gateway.