This document specifies a reference framework of e-Portfolio implementation that can be used to inform and support development of ITLET systems that meet the requirements of learners, instructors, e-learning service providers and others in contexts such as K-12 education, higher education, training and personal development. The reference framework identifies content and functional components that support e-Portfolio systems. It addresses interoperability issues required for data exchange between these components and among the various categories. This document: — provides an e-Portfolio reference framework; — provides descriptions of e-Portfolios in terms of components (content or functional), categories, elements and items; — identifies commonalities of current implementations of e-Portfolios; and, — represents the needs of stakeholders (learners, instructors, etc.). This document does not include: — in-depth technical review of issues related to adaptability to culture, language, and human functions; — security techniques related to the protection of privacy information; — authentication of the identity of an IT or ITLET system user; — how e-Portfolios might integrate with ITLET systems; and, — specific requirements of e-Portfolios or e-Portfolio systems to meet jurisdictional domain requirements.