Final answer:
An AWS Public Service is accessible over the internet and is publicly reachable, but requires proper permissions to access and use the service. It is typically not within a VPC but resides on AWS infrastructure designed for wide accessibility and high availability.
Step-by-step explanation:
When referencing an AWS Public Service, it typically means a service provided by Amazon Web Services that is accessible over the internet. These services are located in the public internet zone and are designed to be publicly accessible by anyone. However, it's important to note that while the services can be accessed by anyone, permissions are required to access the service meaning that you'll need the correct credentials or access controls in place to use the service itself.
Typically, these services are not contained within an individual AWS customer's Virtual Private Cloud (VPC), but rather they reside in the AWS infrastructure at large. This allows AWS to manage, scale, and secure these services, ensuring they’re highly available and accessible across the internet.