A data service is a service created and published dynamically to securely host, manage, and provide access to data. The data and services are hosted in ArcGIS Platform, ArcGIS Online, or ArcGIS Enterprise. Data services include feature services, vector tile services, image tile services, and scene services. A data service is typically created by importing data with the data management tools. A unique URL for the service is assigned by the system when it is created. Data services can also be created programmatically with scripting libraries such as ArcGIS API for Python and ArcGIS REST JS. Data services are managed with hosted layers (items) in a portal. Data services can be accessed through ArcGIS Maps SDKs and open source libraries using a URL and ID, or the item ID in the portal.