This report provides a comprehensive analysis of macro environmental influences on businesses, focusing on the private, public, and voluntary sectors. It begins with an introduction to business and its environment, followed by a discussion on the differences between private, public, and voluntary organizations, including their sizes, scopes, and examples such as Ryanair, NHS, and Shelter. The report delves into the relationship between various organizational functions like finance, marketing, HR, and R&D, highlighting their interdependencies. Part 2 presents a PESTLE analysis framework to examine the external environment, including political, economic, technological, legal, socio-cultural, and environmental factors. The report also explores the interrelation between strengths, weaknesses, and external macro factors, concluding with a summary of the key findings and references.