Step 1: Framing the shift:
If 20th-century management was primarily about efficiency in stable, local, hierarchical organisations, 21st-century management is about agility, connectivity, and responsiveness in a fast-changing, global, digitally-networked environment.
Step 2: Illustrative changes across functions:
Planning now uses real-time data and scenario analysis instead of purely historical trends; organising favours flatter, networked structures over rigid hierarchies; staffing draws on a global, often remote talent pool; directing leans on collaborative and transformational leadership rather than command-and-control; and controlling uses automated, real-time dashboards instead of periodic manual review.
Step 3: Concluding perspective:
The common thread across all these shifts is that 21st-century management must be faster, more adaptive, more inclusive, and more socially accountable than the management practices of earlier generations.
Final Answer:
Modern management has moved from stable, hierarchical, efficiency-focused practices towards agile, technology-enabled, globally-connected, and socially responsible management across every core function.