This document discusses the HABITATS approach to building the INSPIRE infrastructure. It outlines the technological objectives of data modeling and transformation and architecture design and implementation. It then describes the data models and transformation process, including input sources and main tasks. It provides examples of basic transformations like data merging and extracting. It also discusses advanced transformations like harmonizing habitats and biotopes data and the FMI data to the new data model. Finally, it introduces the HABITATS Reference Laboratory concept and architecture as a central hub to support sharing local data and implementing pilot applications.