OGC API - Connected Systems will be built upon accepted web formats such as GeoJSON as well as existing OGC information models, including SensorML, Observations and Measurements (O&M) (now called Observations, Measurements and Samples), SWE Common Data Model, and the Semantic Sensor Network Ontology (SOSA/SSN). The API is intended to act as a bridge between static data (geographic and other domain features) and dynamic data (observations of these feature properties, and commands/actuations that change these feature properties).