You plan to migrate several servers from an on-premises network to (AZ-900)

Correct answer: D) The public cloud is a shared entity whereby multiple corporations each use a portion of the resources in the cloud.
The key advantages of using a public cloud service like Azure over an on-premises network include:

Scalability: The public cloud can provide virtually unlimited computing resources that can be scaled up or down as needed, without the need to invest in and maintain on-premises infrastructure.
Cost Efficiency: Public cloud services often have a pay-as-you-go pricing model, allowing organizations to only pay for the resources they use, rather than investing in and maintaining their own data centers.
Reliability and Availability: Public cloud providers typically have robust infrastructure, redundancy, and disaster recovery capabilities that may be difficult and costly for an organization to maintain on-premises.
Reduced IT Management: With the public cloud, the cloud provider is responsible for the maintenance, updates, and management of the underlying infrastructure, allowing the organization to focus on their core business activities.
The other options provided are not accurate advantages of using a public cloud service. The public cloud is not owned by the public, nor is it a crowd-sourcing solution. Additionally, not all public cloud resources can be freely accessed by the public, as access is typically controlled and secured by the cloud provider.