The Porter's five forces model is a powerful tool that can help companies analyze the competitive landscape and make strategic decisions. The Porter's five forces model is a powerful tool that can help companies analyze the competitive landscape and make strategic decisions. This article will walk through the step-by-step process of how to use this model to make strategic decisions. The first step in using the Porter's five forces model is to identify what you want to accomplish with it. This could be anything from identifying your competitors, understanding where you stand in relation to them, or even determining whether or not you should enter a particular market at all.