I hate acronyms so much :'(. To anyone reading this, please write the full term at least once before using an obscure acronym. It's a pain to decipher, creates confusion, and results in miscommunication. I have no idea what DETA is for and google doesn't help at all. My best guess is "Deployment Estimate Time of Arrival", which doesn't make any sense...
Isn't that what people in this thread are speaking against? It may abstract something away, but with the downsides of learning this new (probably leaky) abstraction, increased third-party reliance, more magic, etc.
We believe people tend to opt for the less complex solution over time. This evolution happens slowly and may upset many people but in the end, simplicity wins. Caching, SQL, Load Balancers didn't exist a few decades ago and now we spend months of our limited time trying to tame the cloud machine.
Don't get me wrong, I'm a lover of (complex) systems, but not everybody needs them/can maintain them.
"Multi-level storage system having a buffer store with variable mapping modes" (1972) mentions caching. The term doesn't require explanation in the paper so was obviously in reasonably wide use already https://patents.google.com/patent/US3820078A/en
DETA[0] is a scalable 'cloud computer' built out of a set of managed services and SDKs that removes time spent by you and your team on infra configuration, security, and maintenance.
Sorry for the rant.