No, configuration defines the system and is therefore significantly harder to test. Application code can be unit tested and run in staging against simulated re

No, configuration defines the system and is therefore significantly harder to test. Application code can be unit tested and run in staging against simulated real world traffic. Configuration, on the other hand, often differs so much between production and staging that the only real way to test is to roll it out gradually and monitor the results. Just make staging and production identical then right? Easier said than done when your production infrastructure runs most of the worlds internet traffic. There’s a good reason that the last major outages to both AWS and Google were caused by infrastructure configuration changes, and it isn’t that their engineering sucks.