SPL, or Software Product Line, is a software engineering approach that focuses on creating a set of related software products from a shared set of core assets. This method allows developers to efficiently produce variations of software by reusing components, which can significantly reduce development time and costs. By leveraging common features and variability management, SPL enables organizations to tailor products to meet specific customer needs while maintaining a consistent quality. This approach is particularly beneficial in industries where multiple versions of software are required, such as in mobile applications or enterprise solutions.