Internal scanning involves analysing a company's internal resources and capabilities. This includes identifying resources that provide competitive advantage according to the VRIO framework. Resources must be valuable, rare, difficult to imitate, and the company must be organized to exploit them. The document discusses evaluating resources against a company's past performance, competitors, and industry averages. It also discusses using a resource-based approach involving identifying, combining, appraising, selecting strategies for, and upgrading resources and capabilities. Corporate culture and value chain analysis are important parts of internal scanning to identify strengths and weaknesses within a company.