Advances in virtual education environments have enabled us to optimize the construction process of content
through the reuse of learning objects, which are stored in repositories. To ensure interoperability, integration and
reusability of learning objects, standards, such as SCORM, have been designed to ensure structural
interoperability of learning objects. Additionally, there exists a good number of E-Learning Management Systems
(LMS) that let us design content for E-Learning platforms. Most of these systems support the reuse of learning
objects that have previously been selected in learning object repositories. Normally, these repositories and the
existing LMS operate as two independent systems. As an alternative to integration, we propose in this paper a
software architecture based on web services that provides two functionalities: Integration of searches in many
learning objects repositories and building and composition of learning objects for E-Learning platforms.
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