> For example, a company who runs their own servers manually can see dramatic improvements in productivity and agility if they move to a newer tech stack and ru

> For example, a company who runs their own servers manually can see dramatic improvements in productivity and agility if they move to a newer tech stack and run on AWS or Heroku or some PaaS as an alternative. They can also see development and shipping of new features crash to a standstill if the move fails or, more commonly and even worse, they end up having to maintain and integrate 2 systems. Tech stacks make a huge difference at the start, but once you're in maintenance mode documentation and tribal knowledge are way better uses of time than playing with new shiny.