Modern concept of sustainable development focuses more on:

The modern concept of sustainable development focuses more on:

1. Economic Sustainability: This involves using various strategies for employing existing resources optimally so that a responsible and beneficial balance can be achieved over the longer term.

2. Environmental Sustainability: This is about stabilizing the currently disruptive relationship between earth's two most significant systems - human culture and the biosphere. In fact, this is the major focus of most sustainable development policies.

3. Social Sustainability: This is about identifying and managing business impacts, both positive and negative, on people. The quality of a company's relationships and engagement with its stakeholders is critical. Directly or indirectly, companies affect what happens to employees, workers in the value chain, customers and local communities, and it is important to manage impacts on people.

4. Cultural Sustainability: This involves respecting and preserving the cultural aspects within an area or population. It's about preserving the cultural identity of a place or people and recognizing the role culture plays in promoting sustainability.

In summary, the modern concept of sustainable development is a complex one that involves balancing the needs of economic growth, environmental protection, social equality, and cultural preservation.