Be sure to check out SMART's presentation:
"The Future of Persistent Memory, DRAM and Flash Form Factors Aligned with New System Architectures" 
Presenter: Arthur Sainio, Arthur Sainio, Director of DRAM Product Marketing
Date: Wednesday, April 21, 2021
Abstract: The options for memory expansion and system acceleration are growing and starting to align with emergent serial and fabric attached architectures. Application responsiveness and system performance are key values for end users. Modern data workloads require real-time processing of large data-sets resident in main memory But, memory capacity has not scaled as compared to the number of CPU cores available in modern day servers. The new serial and fabric attached interconnect architectures (CXL, OpenCAPI, Gen-Z,) enable the use of other form factor like EDSFF E1.S and E3.S for memory expansion and acceleration use-cases. Application and hardware requirements are driving selection of form factors best suited for adding cache coherent serial or fabric attached memory.