When you set up AppStream 2.0, you must specify the virtual private cloud (VPC) and at least one subnet in which to launch your fleet instances and image builders. A VPC is a virtual network in your own logically isolated area within the Amazon Web Services Cloud. A subnet is a range of IP addresses in your VPC.
When you configure your VPC for AppStream 2.0, you can specify either public or private subnets, or a mix of both types of subnets. A public subnet has direct access to the internet through an internet gateway. A private subnet, which doesn't have a route to an internet gateway, requires a Network Address Translation (NAT) gateway or NAT instance to provide access to the internet.
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