A Software Product Line (SPL) is a set of software-intensive systems sharing a common, managed set of features that satisfy the specific needs of a particular market segment. It allows organizations to develop a range of related products efficiently by reusing core assets, such as code, documentation, and design components. This approach helps reduce development time and costs while ensuring consistency across products. By leveraging variability management, SPLs enable customization and adaptation of products to meet diverse customer requirements. This strategy not only enhances product quality but also improves market responsiveness, allowing companies to quickly introduce new features or products tailored to changing demands.