Enterprise and Data Center SSD Form Factors (EDSFF) include E1 and E3 that have supplanted the conventional M.2 and 2.5-in form factors like U.2 in high end servers. M.2 slots are often found on motherboards but server removable drives are now dominated by EDSFF that support the latest PCI Express-based NVMe interfaces that provide massive throughput. In this episode, Sebastien Jean, Chief Technology Officer at Phison Electronics, about the history and evolution of drive form factors and how flash memory has changed the form factor design.