The contemporary technological evolution requires higher levels of education and new skills from the work-force making people more conscious of the importance of being better educated. At the same time information and communication technologies (ICT) and in particular the Internet has enabled a great amount of information to be widely available, bringing new opportunities for learning. Hence, nowadays it is possible to notice the attention given to the elearning area and therefore its

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... t. Many e-learning environments and tools have been developed and used. By the other hand, as developing high quality content is a complex, timeconsuming and costly task, there is a great emphasis on reusability of content material and services. This need for reusability as well as the necessity for developing e-learning as a whole has led to the creation of partnerships among institutions. However, in order to enable this collaboration it is necessary to consider interoperability problems. This paper presents an integrated view of e-learning environments dealing with interoperability through four basic aspects: content, services, agents and rules. In the proposed solution, there is a centralized management of content metadata, services' definition, agents' roles and rules.