Time is a design variable. Time is a dimension in which mistakes are discovered. So you design for the moment that someone says: "We need to change this."
Infrastructure tests your credibility every day. Problems have to be solved at odd hours and installations have to keep working over a prolonged life cycle ...
Wireless M-Bus is a low power, star network, that commonly uses licence free frequencies (868 MHz in Europe) to make the remote reading of meters more practical
In theory, you want the "best" tool. But in reality, yet another system in the stack means more integration, dependencies and more potential points of failure.
Circular economy is the same as "thrift," a common word in our grandparents' era - make, mend and reuse. It sounds almost "cutting edge" but it is utilitarian.