What are the major differences between the key levels of decision making?

What will be an ideal response?

Operational-level decision making requires detailed, structured information about actual transactions by customers, so staff can follow up and track each transaction. However, at the tactical level, decision makers need more aggregated information to see trends and summaries, sorted and tallied in different ways, to monitor success and plan next steps. The business intelligence that executives need to make better decisions is often less structured in strategic levels than at the operational or even management level. Top-level executives certainly need summary and historical data from the company's own transactional systems and data warehouses. But they also need business intelligence that draws on big data, to learn more about their rivals, their industry's landscape, and overall economic trends.