Software is supposed to evolve.
That's expected.
What stood out in the @RetiumChain developer docs is how upgrades are handled.
A contract can move through versioned upgrades while preserving its existing state.
No complex migration workflows.
No forced resets.
When development is complete, the contract can be locked for production.
It becomes immutable while retaining every piece of state built during its evolution.
Flexibility during development.
Immutability when it matters.
Small architectural decisions like this reduce operational complexity without compromising long term trust.