The global economy's transition towards a Circular Economy (CE) is being accelerated by regulatory instruments like the European Union's Digital Product Passport (DPP), mandated under the Ecodesign for Sustainable Products Regulation (ESPR). While the DPP aims to enhance transparency and enable circular practices, its integration presents significant architectural and operational challenges for businesses, particularly within e-commerce. This paper addresses these challenges by proposing a conceptual architectural framework for a scalable, secure, and federated DPP system. Developed through a qualitative synthesis of regulatory analysis, standardization efforts, and expert workshop feedback, the framework outlines the necessary components for both the EU's registry-centric ecosystem and the corresponding enterprise-level implementation. A key finding is that traditional Product Information Management (PIM) systems are insufficient, requiring a more comprehensive, API-driven, and modular architecture. Furthermore, the paper concludes that AI is not merely an efficiency tool but a critical strategic capability. AI is essential for managing data quality at scale, enhancing security, and transforming the DPP from a compliance burden into a value-creating asset through predictive analytics and personalized consumer engagement. The research posits that successfully operationalizing the DPP marks a paradigm shift towards a product-intelligence economy, demanding a holistic architectural approach to realize its full potential.