A company hosts an Amazon EC2 instance in a private subnet in a new VPC. The VPC also has a public subnet that has the default route set to an internet gateway. The private subnet does not have…

Configuring the private subnet's route table to use the internet gateway directly would expose the EC2 instance to inbound connections from the internet, violating the security requirement to block such connections.

Creating a NAT Gateway in a public subnet and configuring the private subnet's route table to route outbound internet traffic through it allows the EC2 instance to initiate connections for updates while blocking unsolicited inbound connections from the internet.

A NAT instance in a private subnet cannot provide outbound internet access without itself having a route to the internet, typically requiring a public subnet, and is less managed and highly available than a NAT Gateway.

While a NAT instance in a public subnet can provide outbound internet access, it is a less managed and less highly available solution compared to a NAT Gateway, making it not the optimal choice.