Software Product Line Engineering (SPLE) is a systematic approach to developing a group of related software products from a shared set of software assets. It focuses on creating reusable components and configurations that can be tailored to meet specific customer needs, thereby reducing development time and costs. SPLE involves defining a product line architecture that outlines common features and variations among products. This method allows organizations to efficiently manage complexity and improve quality by leveraging existing solutions, ultimately leading to faster delivery and better alignment with market demands.