Introducing Amazon VPC NAT Gateway in the South America (São Paulo) Region

You can now use Network Address Translation (NAT) Gateway in the South America (São Paulo) region. NAT Gateway is a highly available AWS managed service that makes it easy to connect to the Internet from instances within a private subnet in an AWS Virtual Private Cloud (VPC). Previously, you needed to launch a NAT instance to enable NAT for instances in a private subnet.
Quelle: aws.amazon.com