This document discusses small and medium enterprises (SMEs) including definitions, classifications, and legal boundaries around the world. SMEs are defined as businesses with personnel or employment below certain limits that vary by country. They make up the vast majority of businesses worldwide and are an important source of employment. The document outlines SME classifications and limits in various countries and regions including India, Egypt, Africa, Bangladesh and Asia. SMEs are classified based on factors like investment amount, turnover, number of employees, and fixed assets.