Description: A public subnet is a part of a network that is accessible from the Internet, allowing resources within it to be visible and accessible to any user on the global network. Public subnets are fundamental for deploying applications and services that require direct access from the web. These subnets are configured to allow inbound and outbound traffic to and from the Internet, meaning that instances or containers deployed in these subnets can receive requests from external users. For a subnet to be considered public, it must have a route to an Internet gateway, and resources within it must have public IP addresses or Elastic IPs assigned. This allows resources to be accessible without restrictions, facilitating interaction with web applications, application servers, and other services that require external connectivity. Public subnets are essential for cloud application architecture, as they allow the exposure of services to end-users and integration with other online systems and services.
