This document discusses four strategic models used in management: PESTEL analysis, Porter's Five Forces, SWOT analysis, and Ansoff Matrix. It explains how these models help analyze the external and internal environment of a business and make informed decisions. The PESTEL analysis focuses on macro environmental factors, while Porter's Five Forces analyzes competitive forces. SWOT analysis evaluates strengths, weaknesses, opportunities, and threats, and the Ansoff Matrix explores growth strategies.