Scope · The definition · Element

The means

How the business serves the need.

The part

What it is

The technology, method or channel currently used. This is the dimension most likely to change and the one most organisations define themselves by.

Naming it as one of three, rather than as the definition, is what keeps a change of means from feeling like a change of business.

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.