webLyzard technology, in collaboration with the United Nations Environment Programme (UNEP), has developed a semantic search platform using Elasticsearch to track global communication flows and visualize public debates on environmental issues related to the UN's Sustainable Development Goals (SDGs). This platform, aimed at stakeholders such as policymakers, corporations, and NGOs, extracts knowledge from diverse online sources to enhance understanding of complex issues, track debate evolution, and identify public opinion indicators. The visual analytics dashboard, powered by Elasticsearch, includes various interactive tools for analyzing public discourse by topic and location. The platform's cross-lingual capabilities allow consistent macro-level views of SDGs across regions, aiding NGOs and citizens in tracking international debates. Migration to Elasticsearch 6.4.2 has significantly improved the system's performance, with response times nearly halved for complex queries, enabling future research and collaborations with stakeholders and organizations supported by EU and other programs.