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The memory industry (4): Technology diversion between DRAM and 3D NAND flash

In 2014, 3D NAND flash was introduced to the industry with 24 layers, and it co-existed with 2D NAND flash until 2017. 3D NAND flash gradually came to dominate the market with its high-density storage capacity and technologies, and its manufacturing process completely diverged from that of DRAM. The synergy of utilizing the same processes and equipment for the two memory types – DRAM and NAND – was completely gone, and the core of competitive strategies in the memory industry changed.