The difference between DFM and DFA is their particular focus. But keep in mind that both aim at making a product’s design easy to manufacture. https://titoma.com/blog/difference-dfm-dfa-dfma
DFM focuses on creating guidelines that will make individual parts and components easy to get or cost-efficient to manufacture. https://titoma.com/blog/dfm-electronics-complete-guide
DFA focuses on creating guidelines to decrease the number of components and parts needed to create a product. https://titoma.com/blog/mistake-proofing
DFMA engineering can be summarized as a methodology to design a product focusing on ease of manufacture and fast assembly.
