Product platform & service strategy sits between the product vision and product line strategy which guides individual product development. A product platform is not what is sold to customers. It is the foundation of product strategy because in high tech companies, many products are typically built from a core technology. Selection of core technologies used in product platform decisions are frequently irreversible and have long term impact for product development.A product-service system (PSS), also known as a function-oriented business model, is a business model, developed in academia, that is aimed at providing sustainability of both consumption and production