Which deployment method offers the FASTEST deployment?

Explanations:

The Immutable deployment method creates a new environment for the new version of the application and switches traffic only after the new environment is fully running, making it slower compared to other methods.

The Rolling deployment method updates instances in batches, which can take longer as it waits for each batch to become healthy before moving to the next.

The Rolling with additional batch method updates instances in batches but adds extra capacity to ensure no downtime during deployment, which can also lead to slower overall deployment times.

The All at once deployment method updates all instances simultaneously, resulting in the fastest deployment time as all instances are switched to the new version at once.