What is the main benefit of using AWS VPC?

The main benefit of using AWS VPC (Virtual Private Cloud) is that it provides a logically isolated network environment. This isolation allows users to define their own network topology, including specifying IP address ranges, subnets, and route tables, enabling a highly customizable and secure setup for resources hosted on AWS.

By having this level of control, customers can launch AWS resources into a virtual network that they have defined, leading to enhanced security and management capabilities. This means that resources inside the VPC can only communicate with each other based on the configured networking rules, thus protecting sensitive data and applications from potential external threats.

In contrast, the other options are not the primary benefits provided by AWS VPC. While monitoring cloud expenses, improving bandwidth usage, and providing storage capabilities are important aspects of cloud operations, they do not specifically relate to the core functionality of creating a private and controlled network environment that VPC offers.