FAIR-EASE will implement a data discovery and access service, building on existing pre-operational services, to provide users with an easy, FAIR tool for discovery and access to multidisciplinary environmental datasets. It also proposes the implementation of a FAIR-EASE Earth Analysis Lab with EOSC connectivity supporting, through web interfaces, predefined processing tools and on-demand data visualization services for remote analysis and processing of heterogeneous data. In this context, the FAIR-EASE project will develop a number of multidisciplinary use cases pilot projects to validate and demonstrate the capabilities of the FAIR-EASE service to support open science. These pilot projects are grouped into 3 themes: 1) Earth Dynamics and the Environment divided into 3 subgroups (Coastal Water Dynamics, Planning and Management of Critical Earth Areas, and Volcano Space Observation), 2) Environmental Biogeochemical Assets, and 3) Biodiversity Observation.