AzCopy v10 is the next-generation data migration utility designed from scratch to support large-scale data ingress and egress scenarios for Azure Storage. After a fruitful preview program, AzCopy v10 is now generally available to all of our customers and provides higher throughput and more efficient data movement compared to the earlier version of AzCopy (v8).
If you're using AzCopy v8, please upgrade to v10 by following the AzCopy v10 documentation.