You have two Azure Virtual machines that run Windows Server. You plan to create a failover cluster that will host the virtual machines. You need to configure an Azure Storage account that will be…

Geo-zone-redundant storage (GZRS) offers cross-region replication in addition to zone redundancy, which is overkill for a cloud witness that primarily needs resilience within the cluster's operational region.

Geo-redundant storage (GRS) replicates data to a secondary Azure region, providing disaster recovery for the data itself, but it does not enhance the resilience of the cloud witness against failures within the primary region's Availability Zones, which is critical for cluster quorum.

Zone-redundant storage (ZRS) maximizes resiliency for an Azure failover cluster's cloud witness by synchronously replicating its data across three Azure availability zones within the primary region. This ensures the cloud witness remains available and maintains quorum even if one entire Availability Zone becomes unavailable.

Locally-redundant storage (LRS) stores data within a single datacenter and does not protect against an Availability Zone failure, making it insufficient for maximizing resiliency for a cloud witness in an Azure VM failover cluster.