I compiled this thread on Twitter, and all of a sudden, it got quite some attention. So here, I'll try to elaborate on the topic a bit more. Maybe it would be helpful for someone trying to make a career decision or just improve general understanding of the most hyped titles in the industry.
DevOps, SRE, and Platform Engineering (thread)— Ivan Velichko (@iximiuz) July 31, 2021
Sharing my understanding of things after working in this domain for about two years.
Starting from the clearest one.
Dev - this is about application development, aka business logic. The only one that makes money for a company.