In our research work, we address the issue of representing the learning scenario’s concepts, in a learning platform. In this context, we have proposed a process for operationalizing pattern-based learning scenarios. We present the first two steps dealing with the new challenge of modeling deployable e-learning scenarios using Semantic Web technologies. It is primarily an ontology-based description of learning scenarios, which helps reducing the gap between human-readable and machine-readable vocabulary. We highlight the effectiveness of orienting teachers-designers, non-platform experts, toward creating adaptable and deployable learning scenarios. We defend that an assisted and platform-oriented design, allows the teachers to have a better pedagogical use of the embedded tools and features of learning platforms.