Creates a route in a route table within a VPC.

You must specify one of the following targets: Internet gateway or virtual private gateway, NAT instance, NAT gateway, VPC peering connection, or network interface.

When determining how to route traffic, we use the route with the most specific match. For example, let's say the traffic is destined for, and the route table includes the following two routes: (goes to some target A) (goes to some target B)

Both routes apply to the traffic destined for However, the

second route in the list covers a smaller number of IP addresses and is therefore more specific, so we use that route to determine where to target the traffic.

For more information about route tables, see Route Tables ( in the Amazon Virtual Private Cloud User Guide.