Logistics · The network · Element
The routes
How goods move between nodes and to customers.
The part
What it is
Route structure determines both cost and lead time, and the two trade against each other in ways that should be chosen rather than inherited.
The last leg is disproportionately expensive and is the part the customer experiences, which makes it worth separating.
The smallest level
The attributes it carries
Each attribute is one of the framework’s shared types. What a date is, and how it is written, is defined once for the whole model — the note here says what it means in this particular place.