Final answer:
Organizational culture is best characterized by the expression 'This is how things are done around here.' It refers to the values, visions, norms, and interactions within a company or organization. Different departments within one company can develop their own subculture within the overall organizational culture.
Step-by-step explanation:
The expression that best characterizes what a company or organizational culture is "This is how things are done around here." Organizational culture encompasses the values, visions, hierarchies, norms, and interactions among its employees. It is how an organization is run, how it operates, and how it makes decisions. Different departments within one company can develop their own subculture within the organization's culture.