OGC API - Connected Systems
OGC API - Connected Systems is designed 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).
Overview of OGC API - Connected Systems
                        GET /
                     
 Retrieves the landing page. The purpose of the landing page is to provide clients with a starting
                        point for using the API. Any resource exposed through an API can be accessed by following paths
                        or links starting from the landing page.
The landing page includes three metadata elements; title, description, and attribution. Only the title is required. These three elements describe the API as a whole. Clients can expect to encounter metadata which is more resource-specific as they follow links and paths from the landing page.
                        GET /api
                    
Retrieves the API definition which describes the capabilities provided by that API. This resource
                        can be used by developers to understand the API, by software clients to connect to the server,
                        and by development tools to support the implementation of servers and clients.
                        GET /conformance
                    
Provides a list declaring the modules that are implemented by the API. These modules are referred
                        to as Conformance Classes. The list of Conformance Classes is key to understanding and using an
                        OGC Web API.
                        GET /collections
                    
List or search all collections available from this server endpoint.
                        GET /collections/{collectionId}/items
                    
Retrieve collections items, which can be Systems, Procedures, Deployments, Sampling Features, or any other features.
                        GET /systems
                    
List or search all systems accessible from this server endpoint.
                        GET /procedures
                    
List or search all procedures accessible from this server endpoint.
                        GET /deployments
                    
List or search all deployments accessible from this server endpoint.
                        GET /samplingFeatures
                    
List or search all sampling features available from this server endpoint.
                        GET /properties
                    
List or search all properties available from this server endpoint.
                        GET /datastreams
                    
List or search all datastreams available from this server endpoint.
                        GET /observations
                    
List or search all observations available from this server endpoint..
                        GET /controlstreams
                    
List or search all control streams available from this server endpoint.
                        GET /commands
                    
List or search all commands available from this server endpoint.
                        GET /systemEvents
                    
List or search events about any system.
                        GET /systems/{systemId}/history
                    
List or search historized descriptions of the parent system.