Is MATIC a zk rollup?

Could you clarify whether MATIC, also known as Polygon, is a zk rollup or not? From my understanding, zk rollups are a type of Layer 2 scaling solution that utilize zero-knowledge proofs to compress and validate transactions off-chain, allowing for increased throughput and reduced fees on the base blockchain. Polygon is often discussed as a Layer 2 solution for Ethereum, but I'm unsure if it specifically utilizes zk rollup technology. Can you provide some insight into this?