App teams promote builds from dev to staging to production. How should promotion work for infrastructure changes?

Promote the same code version, then generate and approve a separate saved plan against each environment's state and inputs. Pin, apply each reviewed artifact in sequence, and let the gates rise as you approach production. Environment branches quietly undo all of it.

Grounded in researched DevOps, SRE and platform engineering interview loops, written to a senior-engineer editorial bar, and never padded to hit a word count.