Well, "digital transformation" is not a technology -- it's this strategic paradigm of how technology is diffused across an organization. The opposite of "digital transformation" is "IT infrastructure" -- the idea that technology works as an infrastructural layer supporting business operations, rather than dispersed across operations themselves.
"IT" has for long been this back-office area where specialists get to dictate business policies because they know computers. (A classic on this genre is the Bastard Operator from Hell [0]) -- but now lusers bring their own computers and phones to work, and hell if they don't have technological ideas of their own. IT has been commoditized, cloudified, outsourced.
If "digital transformation" sounds bogus is because management consultants are bogus. But in practice it can be a real thing that's not as much about new sexy tech (in the sense of blockchains, RISC chips and so on) as about putting what's already available into operation using business knowledge.
