Sustainability is easy to talk about and harder to act on. Outside the marketing, it usually comes down to using less, wasting less, and being able to show the difference.
That starts with measurement. Without a current picture of how things run, efficiency claims are guesses.
The practical route is to test changes at a sensible scale, keep the ones that earn their place, and drop the ones that do not.
This note is being expanded. The full version is in preparation.
