A company is expanding its application to a new region and needs to ensure that the architecture is designed for high availability. They plan to set up a VPC for their resources. Which component should they include to isolate different parts of their network within this VPC?
In a VPC, a subnet is a range of IP addresses where resources can be isolated and managed. Having multiple subnets allows a company to separate different tiers of their application (such as web servers in a public subnet and databases in a private subnet) to increase security and manage traffic flow within the VPC. The Availability Zone is a larger concept where AWS infrastructure is organized, and gateways are for allowing traffic in and out of the VPC, not for isolation within it. While security groups are used for setting access controls to resources, they do not isolate network parts.
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