Feature Modeling is a technique used in software engineering to represent and analyze the features of a system. It helps in understanding the relationships and dependencies between different features, allowing teams to visualize how they can be combined or configured. This is particularly useful in product line engineering, where multiple variations of a product are developed from a common set of features. By creating a feature model, stakeholders can identify which features are mandatory, optional, or alternative. This structured approach aids in decision-making, ensuring that the final product meets user needs while managing complexity and reducing development costs.