app authentication

App authentication is a type of authentication that grants a short-lived access tokenAn access token is an authorization string that provides access to secure ArcGIS content, data, and services. Its capabilities are determined by the privileges it supports. It is obtained by implementing API key authentication, User authentication, or App authentication.Learn more based on an OAuth 2.0OAuth 2.0 is an industry standard protocol for authorization. It defines how to obtain and manage credentials for web, desktop, and mobile applications. It is supported by ArcGIS.Learn more client ID and client secret, authorizing an application to access ArcGIS servicesA service, also known as an ArcGIS service, is software that supports an ArcGIS REST API and provides geospatial functionality or data. A service can be hosted by Esri or in ArcGIS Enterprise.Learn more and portal itemsAn item, also known as a content item, is a resource stored in a portal such as a web map, hosted layer, style, script tool, file, or notebook.Learn more. This workflow uses the OAuth2.0 authorization protocol with a client_credentials grant type to secure client login. The access token granted by app credential authentication is associated with a developer's ArcGIS accountAn ArcGIS account is an identity with a user type and set of privileges that can access specific ArcGIS products, tools, APIs, services, and resources. The main account types that can be used for development are an ArcGIS Location Platform account, ArcGIS Online account, and ArcGIS Enterprise account. ArcGIS Location Platform and ArcGIS Online accounts are also associated with a subscription.Learn more and can only be used to access location services.