What is Amazon VPC?

Amazon VPC, or Virtual Private Cloud, is a fundamental service offered by AWS that enables users to create a logically isolated section of the AWS cloud where they can define and control their virtual networking environment. This includes aspects such as selecting IP address ranges, creating subnets, configuring route tables, and setting up network gateways.

By using Amazon VPC, users can securely connect their AWS resources to each other and to on-premises infrastructure via VPN, ensuring that sensitive data can be handled in a secure manner. The isolation provided by VPC allows for better management of resources, security configurations, and compliance with regulatory requirements.

While the other options describe various AWS tools and services, they do not reflect the core functionality of Amazon VPC. For example, managing software patches is typically related to AWS services like AWS Systems Manager, while content delivery is handled by AWS CloudFront. Developing SaaS applications is facilitated by a range of AWS services but isn't specifically tied to Amazon VPC. Thus, the unique role of Amazon VPC as a service for creating isolated networking environments makes it the correct choice.