The COST Action – European network for Web-centered linguistic data science (NexusLinguarum) – launched on October 28th 2019 in Brussels. Mozaika is a Bulgarian representative in the project with a consortium of partners from 33 countries. In the next 4 years we will work to promote synergies across Europe between linguists, computer scientitst, terminologists, language professionals,andother stakeholders in industry andsociety in order to investigate and extend the area of linguistic data science, through the construction of an ecosystem f multilingual and semantically interoperable linguistic data at Web scale. Stay tuned.