Make the system dependable before you build anything else on it.
You’re here if
Something important works, mostly. But the person who built it is gone, nobody is sure how it deploys, and every change carries a risk that is hard to size. The safest-feeling option is to touch it as little as possible, which is how it gets worse.
What changes: A system your team can change without holding their breath.
Stabilize & Modernize