In business analysis, PEST analysis ("political, economic, socio-cultural and technological") describes a framework of macro-environmental factors used in the environmental scanning component of strategic management. It is part of an external environment analysis when conducting a strategic analysis or doing market research, and gives an overview of the different macro-environmental factors to be taken into consideration. It is a strategic tool for understanding market growth or decline, business position, potential and direction for operations. PEST analysis was developed in 1967 by Aguilar as an environmental scanning framework. Aguilar argued that firms must scan the economic, technical, political and social categories (ETPS) that may affect strategy, defining environmental scanning as follows, “scanning for information about events and relationships in a company’s outside environment, the knowledge of which would assist top management in its task of charting the company’s future course of action.” Composition The basic PEST analysis includes four factors: Political factors relate to how the government intervenes in the economy. Specifically, political factors have areas including tax policy, labour law, environmental law, trade restrictions, tariffs, and political stability. Political factors may also include goods and services which the government aims to provide or be provided (merit goods) and those that the government does not want to be provided (demerit goods or merit bads). Furthermore, governments have a high impact on the health, education, and infrastructure of a nation. Economic factors include economic growth, exchange rates, inflation rate, and interest rates. These factors can drastically affect how a business operates. For example, interest rates affect a firm's cost of capital and therefore to what extent a business grows and expands. Social factors include the cultural aspects and health consciousness, population growth rate, age distribution, career attitudes and emphasis on safety. High trends in social factors affect the demand for a company's products and how that company operates. For example, the ageing population may imply a smaller and less-willing workforce (thus increasing the cost of labour). Furthermore, companies may change various management strategies to adapt to social trends caused from this (such as recruiting older workers). Technological factors include technological aspects like R&D activity, automation, technology incentives and the rate of technological change. These can determine barriers to entry, minimum efficient production level and influence the outsourcing decisions. Furthermore, technological shifts would affect costs, quality, and lead to innovation Variants Variants that build on the PEST framework include: PESTEL or PESTLE, which