Agree/Disagree: You can only ship as fast as you can test?

I know some people don't test at all and some have their users test in Production. No judgement.

Assuming your teams test, Dev->Staging->Prod, local dev or ephemeral env's. What do you think the critical path is to help you go faster other than increasing raw Eng bandwidth:

- Write code more efficiently? - CI/CD pipelines - build/deploy faster? - Test earlier, test faster, test better?