This report provides an analysis of Subway's marketing strategies, focusing on trading and exchange principles within the Australian market. It examines various macro and micro environmental factors affecting Subway's operations, including demographic trends, economic conditions, technological advancements, customer preferences, competitive landscape, and the role of intermediaries. The report also presents recommendations for how Subway should react to these factors, such as updating their menu, enhancing their online ordering system, maintaining competitive pricing, leveraging social media for marketing, and ensuring strong supplier relationships. The goal is to help Subway maintain its customer base, improve its performance, and adapt to changing environmental conditions effectively, by providing high-quality customized food services.