In strategic planning and market analysis, we often need to answer the question: What kind of macro environment are we in? What external opportunities and threats exist? These questions directly relate to the survival of a company. The PEST model is the most classic tool for answering these questions. Whether you are an entrepreneur, product manager, marketing specialist, or a student writing a business plan, PEST analysis is an essential course you cannot avoid. Today, we will explain it thoroughly, from its concept, dimensions, usage, differences from SWOT, to how to draw it using charting tools.