To the gargantuan number of people I meet everyday: Shift left in this context talks about SDLC (which is useful but quite old and unsurprising by today's standard).

There are far more important and larger piece of shifting "left" which developers do not yet fully come to grapple with. Let me spell it out for you: - Information Security practices - Platform/DevOps practices - Networking Concepts 101: Are these new 20 something devs cognisant of the famous "fallacies of distributed computing"?