Supply market analysis involves identifying competitive pressures and external influences. Porter’s Five Forces assesses supplier power, buyer power, threat of substitutes, new entrants, and rivalry — directly relevant to market dynamics. STEEPLED analysis considers external macro-environmental factors (social, technological, economic, environmental, political, legal, ethical, demographic). By contrast, Porter’s Value Chain analyses internal activities of a single organisation, while the Ishikawa diagram is a root-cause tool for problem-solving, not market analysis. Using the correct tools ensures sourcing decisions account for risks and opportunities at both industry and macro levels.