What is a key requirement for applications hosted in a private subnet in a VPC?

Applications hosted in a private subnet within a Virtual Private Cloud (VPC) are primarily isolated from direct access to the internet, which facilitates better control over security and compliance. One of the key requirements for such applications is ensuring enhanced security compliance. This is because private subnets are designed to host resources that should not be publicly accessible, thereby reducing the attack surface and helping to protect sensitive data from external threats.

In a private subnet, network configurations can be set to allow only specific types of traffic and access, often integrating additional security measures such as firewalls and security groups. This is especially important for applications that handle confidential information or are subject to regulatory requirements, where the management of data access is critical.

The other options do not align with the fundamental characteristics of a private subnet. For instance, internet access is not a requirement for private subnets, as they are designed to operate without public-facing connections. Low latency connections can be important for certain applications, but it is not specific to the characteristics of private subnets. Direct access from public IPs contradicts the very purpose of a private subnet, which is to limit exposure to the internet. Therefore, enhanced security compliance is indeed the key requirement for applications hosted in such environments.