Observations Data Model 2 (ODM2) is an information model for feature-based earth observations, designed to facilitate interoperability across scientific disciplines and domains. ODM2's metadata is structured around sampling, sensing, and analysis workflows. It also provides a supporting software ecosystem. Implementing the ODM2 data model as a database allows the integration of hydrological time series, soil and sediment geochemistry, biodiversity surveys, oceanographic sensor profiles, and multi-dimensional spectra.