What must each CloudHub worker be assigned to ensure deployment?

Each CloudHub worker must be assigned a dedicated IP address to ensure deployment. Assigning a dedicated IP address allows the application deployed on CloudHub to be reliably reached by external systems and users. This is particularly important for applications that require stable and consistent connectivity, as a dedicated IP address remains the same across different deployments, unlike dynamic IP addresses that can change.

The presence of a dedicated IP address facilitates easier integration with other services, as endpoints can be configured to communicate with a consistent address. This is crucial for enterprise environments where applications depend on certain stability in their networking configuration, such as for whitelisting in security settings or for stable connections to databases and APIs.

The other options do not fulfill the requirement for deployment in the same fundamental way. Multiple application instances are related to scaling and redundancy rather than the deployment prerequisite. A redundant server addresses failover mechanics but doesn't directly impact deployment. Finally, while a public-facing DNS entry can be beneficial for accessibility, it does not alone guarantee that a worker can be deployed without the underpinnings of a dedicated IP address, which is essential for reliable access and communication.