
can be developed by what combination of subsidiaries, so all possible links should, in prin-
ciple, be kept open. This strategy, however, obviously entails costs that can easily become
prohibitive. The theoretical number of links varies between network structures. In a ‘star
structure’, one central node is connected to all other nodes, which remain unconnected
to each other. In this structure, the number of links is equal to the number of nodes. If an
MNC with such an internal structure has n subsidiaries, it also has n intra-organizational
links to maintain. This would be the archetypical international or multidomestic type of
MNC, in which only headquarters–subsidiaries relationships are invested in, and links
between subsidiaries remain unimportant. The transnational, however, can better be
compared with the theoretical structure of the ‘fully connected network’, in which each
node is directly connected to each other node. Here, if n is the number of nodes, the
number of links becomes (n
2
n)/2. As an example, take an MNC with 20 local sub-
sidiaries. In a star structure, the number of intra-firm relationships would be 20; but in a
fully connected network, the number of links to be maintained would be no less than 190.
Clearly the costs of maintaining a network of this size can become a serious competitive
disadvantage, at least if the links are to be of the kind that enables the exchange of knowl-
edge that is often difficult to codify.
This brings us to the other point. Transnational MNCs rely relatively much on
expensive forms of coordination. Hierarchical coordination and bureaucratic control pro-
cesses are less important than in the more traditional forms of MNC management. These
coordination mechanisms – and the same is true of output control – are not very con-
ducive to the speedy, improvised and high-quality exchange of ideas associated with
explorative learning in a differentiated network of MNC units. The knowledge to be
exchanged will very often be partly implicit and difficult to codify. As a result the MNC
must extensively use coordination mechanisms that allow unstructured information to be
exchanged between units in a flexible way. As a result there will be, relatively, much
emphasis on coordination through socialization and networks.
This can be clarified with the distinction Thompson (1967) made between various
types of interdependence between individuals or units. Thompson distinguished between
three types of interdependency (see Figure 9.6). In the case of pooled interdependence, two
units depend on the inputs from a third unit for their own tasks. However, after having
received this input the two units can function independently from each other. If there is
sequential interdependence, one unit depends on the inputs from a second unit for the fulfil-
ment of its task, and a third unit in turn is dependent on its own output. Reciprocal
interdependence, finally, is the term Thompson uses for situations in which units depend on
each other’s outputs in complex and unpredictable ways.
The three kinds of interdependency can be linked to the types of coordination mech-
anisms discussed earlier in this chapter. Pooled interdependence exists, for instance,
between the subsidiaries of a multidomestic MNC. They are all dependent on headquar-
ters’ decisions with regard to targets and budgets, but once these have been decided upon,
each subsidiary can go its own way. This type of interdependence can be managed
through output control. Sequential interdependence is typical of the relationship between
functional departments within a firm. Within an MNC the various production units will
often be organized internally along these lines (the following discussion is based on
Egelhoff, 1993). Sequential interdependence can effectively be managed through bureau-
cratic formalized control if the issue is of a routine nature, and through hierarchical
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