Zon Multimedia, a Portuguese telecom spin-off from Portugal Telecom, is expanding services from cable TV to a multi-play offering that includes internet and voice services. The company is undergoing a service transformation by creating a centralized order management system to improve quality of service, reduce operational complexity, and unify product data. Sigma Systems plays a crucial role in this transformation by abstracting network complexities and providing a unified service layer, enhancing customer care and operational efficiency.