Thanks for clarifying. In that case what they're advocating for seems like a really bad idea. One nice thing about having staging / pre-prod environment is tha

Thanks for clarifying. In that case what they're advocating for seems like a really bad idea. One nice thing about having staging / pre-prod environment is that it can replicate prod architecture, content and config (for the most part anyway) which allows for things like performance checks to be ran after code has been tested for functionality in lower environments. Something I've also seen is that prod websites typically load various analytic and marketing scripts which might not be included on dev environments. Even if those scripts are not maintained by the dev team, you probably still want to be checking any code being deployed isn't going to break an analytic script because it's expecting links to have a certain class, etc.