The first factor is the duration of relationships in the supply chain. Duration is defined as the length of time relationships exist
between member firms in a supply chain. Do member firms in the supply chain have primarily short- or long-term interactions?
In the aerospace and defense industries, for example, aircraft manufacturers such as Lockheed-Martin and Boeing tend to have
long-term relationships reflecting the time it takes to design and produce a plane and the intricate web of technologies that are
involved. In the entertainment industry, in contrast, relationships are often more transactional reflecting high rates of change and
innovation as well as shifting consumer preferences.