In AWS, a subnet is a range of IP addresses in your VPC (Virtual Private Cloud). It's essentially a subdivision of your VPC's IP address range. Subnets are used to partition your VPC into smaller networks for better organization, security, and resource management.
Each subnet is associated with a specific availability zone within a region. This means that instances launched in a subnet reside in the availability zone that the subnet is associated with. Subnets also have route tables associated with them, which determine how traffic is routed in and out of the subnet.
Subnets in AWS play a crucial role in designing and deploying network architectures for your applications and services. They enable you to isolate different parts of your infrastructure, control traffic flow, and implement security measures such as network access control lists (ACLs) and security groups.
