The biggest change in my career was when I got promoted to be a linux sysadmin at a large tech company that was moving to AWS. It was my first sysadmin job and I barely knew what I was doing, but I knew some bash and python. I had a chance to learn how to manage stuff in data centers by logging into servers with ssh and running perl scripts, or I could learn cloudformation because that was what management wanted. Everybody else on my team thought AWS was a fad and refused to touch it, unless absolutely forced to. I wrote a ton of terrible cloudformation and chef cookbooks and got promoted twice times and my salary went from $50,000 a year to $150,000 a year in 3 years after I took a job elsewhere. AFAIK, most of the people on that team got laid off when that whole team was eliminated a few years after I left.