Which deployment policies satisfy this requirement?

Explanations:

“All at once” deployment replaces the entire environment in a single operation, which can lead to downtime and doesn’t guarantee full capacity during deployment.

“Immutable” deployment creates a new environment and swaps traffic to it, ensuring full capacity is maintained during deployments without affecting the current environment.

“Rebuild” causes a restart of all instances, which can lead to temporary downtime and doesn’t guarantee full capacity during deployment.

“Rolling” updates replace instances in batches. During the update, some instances may be unavailable, so full capacity is not guaranteed at all times.

“Rolling with additional batch” adds a batch of instances before terminating old ones, ensuring there is no reduction in capacity during deployment.