This article discusses how companies gain an edge over competitors. Researchers have two main ideas: one focuses on a company's resources, like skills and money, while the other looks at its activities in the market. To understand this, we need to see how resources and activities work together to make a company successful. The key is when these two things co-evolve, or change together, the company's competitive advantage grows. So, it's not just having strong resources or great activities, but how these two evolve together that makes a company stand out from others.