Even in supposedly "international" companies, Geert Hofstede's pioneering work on cultural dimensions theory—that @Brouwer alluded to—comes to mind. (Hofstede described national cultures along six dimensions: power distance, individualism, uncertainty avoidance, masculinity, long-term orientation, and indulgence vs. restraint.) After all, can one really equate, say, Samsung and Huawei with Apple?

But, the point of this rejoinder is that decision making is a stream of inquiry, not an event. Decision-driven organizations design and manage it as such: they match decision-making styles to appropriate techniques and, wherever possible, encourage parties to play roles rife with dissent and debate; decision rights are part of the design. On Decision Making, available at https://www.researchgate.net/publication/266477995_On_Decision_Making, elucidates further. From this perspective, this is surely where even greater diversity in the decision-making processes of "international" companies will be found.

Article On Decision Making

DECISION MAKING PROCESS IS SIMILAR THAT IS PICKING/CHOOSING THE BEST AVAILABLE ALTERNATIVE.  MNCs KEEP IN MIND LOCAL PERSPECTIVES THROUGH MANAGERS' COGNITIVE, META-COGNITIVE, MOTIVATIONAL BEHAVIORAL CROSS CULTURAL COMPETENCES, WHICH HELP THEM TO HAVE CLEAR UNDERSTANDING OF CROSS CULTURAL PERSPECTIVE WHILE MAKING THE DECISIONS

The cognitive process is fairly similar accross cultures as you deal mainly with MBA grads that have the same training in cognitive decision making. There are differences in values and cultural aspects like power distance can greatly affect how decsion makers are i fluenced or not.

The process has to recognize the differences in cultures and adapt. Sensitivity to other cultures is very important.

Attitude and Mindset

Emotional intelligence

Even in supposedly "international" companies, Geert Hofstede's pioneering work on cultural dimensions theory—that @Brouwer alluded to—comes to mind. (Hofstede described national cultures along six dimensions: power distance, individualism, uncertainty avoidance, masculinity, long-term orientation, and indulgence vs. restraint.) After all, can one really equate, say, Samsung and Huawei with Apple?

But, the point of this rejoinder is that decision making is a stream of inquiry, not an event. Decision-driven organizations design and manage it as such: they match decision-making styles to appropriate techniques and, wherever possible, encourage parties to play roles rife with dissent and debate; decision rights are part of the design. On Decision Making, available at https://www.researchgate.net/publication/266477995_On_Decision_Making, elucidates further. From this perspective, this is surely where even greater diversity in the decision-making processes of "international" companies will be found.

Article On Decision Making

What are the most important cross-cultural characteristics of the decision-making process in the international companies?

These can include:

Thank you for all your answers!