Does arbitrum use ZK rollups?

Hello there, I'm curious about the technical details behind Arbitrum and its use of ZK rollups. Can you elaborate on whether Arbitrum actually employs ZK rollups in its architecture, and if so, how does it utilize them to enhance scalability and efficiency? I'm particularly interested in understanding the benefits that ZK rollups bring to the table for Arbitrum users and developers. Thanks in advance for your insights!