Ssh and ftp are great once they’re setup, but they’re not as simple as this, especially for non technical users.
This is also much faster than ssh/ftp for downloads and uploads. It breaks files up into multiple concurrent streams, in benchmarks it can hit download speeds of 8GB/s and upload speeds of 1GB/s (network allowing). It also does deduplication during the transfers, making real world transfer times faster than just the actual transfer speed.