Knowledge and competences capital of an organization are increasingly crucial. The organization survival depends mainly on its capacity to access new knowledge, to diffuse its competences quickly and to exploit and preserve its expertise fields efficiently and durably. Thus today, organizations are aware of the necessity to become learning organizations and to maximize organizational learning. Organizational learning process is composed by three sub-processes: a learning process, a knowledge management process and a social process. A web platform based on learning organization memory can answer to needs of all these sub-processes. This paper's aim, within the approach MEMORAe, is to model and design an organizational learning support. To that end, in order to take into account all the identified needs, it proposes to associate: educational engineering (e-learning), knowledge engineering (knowledge management and semantic web) and social engineering (web 2.0 technologies). This support is a web platform using ontologies, semantic annotations and Web 2.0 technologies in order to organize, share, and capitalize organizational competences, knowledge and resources. This article specifies concepts of learning organization, organizational learning and it underlines the existence of the three different sub-processes in this learning form: learning, knowledge management and social. It presents all these sub-processes and their needs. Then it presents its approach in describing learning organizational memory modelling and how it takes into account learning, knowledge management and social sub-processes. Finally, it describes the platform E-MEMORAe2.0 as tool to support organizational learning.