This document discusses the different types of companies, including micro businesses, small businesses, medium-sized businesses, and large-scale organizations. It explores the organizational structures of sole traders, partnerships, limited liability businesses, public limited liability businesses, and cooperatives. The document also examines how organizational structure and external factors, such as political, economic, social, technological, legal, and environmental factors, affect business productivity through a PESTLE analysis. The importance of selecting the right business size and structure for success is emphasized.