I cannot believe the excuse for why shift-left QA is “not working” is that Amazon hires developers who can’t learn basic testing skills that QA engineers picked up in three months. If developers can’t write valid code for tests, that’s on the organization, not on the practice.

The author forgot to mention the costs of handoffs, which paid off all those tiny learning investments.

Shift-left has over 30 years of proof as one of the most effective ways to build reliable software.

P.S. This isn’t an ACM article; it’s a strongly opinionated post based on personal experience.

P.P.S. I'm not against QA, but make them as bug/quality hunters, instead of toil.