A flat organization structure is one that has few layers of reporting and authority.
Organization structure with few layers of reporting often translates to less bureaucracy. Hence, decisions are taken faster and the company is mobile and agile. When done right, a flat structure can lead to greater levels of efficiency, competitiveness, and profitability.
In today's global information age, it's no longer the big who win the game. It's the smart that dominate and ultimately win. That is why more and more organizations are embracing a flat organization structure. It makes business a lot more fun.