NVM Express (NVMe) is a protocol for the transport of data over different media and for optimized storage in NAND flash. Peripheral Component Interconnect Express (PCIe) is currently the most used transport medium. Other media, like NVMe over Fabrics, are currently being standardized. NVMe is optimized for NAND flash chips. The protocol provides a high-bandwidth and low-latency framework to the storage protocol, but with flash-specific improvements.