What is the Azure AD v2.0 OpenID Metadata Document?

Azure AD v2.0 OpenID Metadata Document is an online JSON document that contains most of the information required for an app to perform sign-in. This includes information such as the URLs to use and the location of the service's public signing keys. The OpenID Connect metadata document can be found at: https://login.microsoftonline.com/common/v2.0/.well-known/openid-configuration.

Here is a copy of the Metadata Document retrieved from the above address:

{
    "authorization_endpoint": "https:\/\/login.microsoftonline.com\/common\/oauth2\/v2.0\/authorize",
    "token_endpoint": "https:\/\/login.microsoftonline.com\/common\/oauth2\/v2.0\/token",
    "token_endpoint_auth_methods_supported": [
        "client_secret_post",
        "private_key_jwt",
        "client_secret_basic"
    ],
    "jwks_uri": "https:\/\/login.microsoftonline.com\/common\/discovery\/v2.0\/keys",
    "response_modes_supported": [
        "query",
        "fragment",
        "form_post"
    ],
    "subject_types_supported": [
        "pairwise"
    ],
    "id_token_signing_alg_values_supported": [
        "RS256"
    ],
    "http_logout_supported": true,
    "frontchannel_logout_supported": true,
    "end_session_endpoint": "https:\/\/login.microsoftonline.com\/common\/oauth2\/v2.0\/logout",
    "response_types_supported": [
        "code",
        "id_token",
        "code id_token",
        "id_token token"
    ],
    "scopes_supported": [
        "openid",
        "profile",
        "email",
        "offline_access"
    ],
    "issuer": "https:\/\/login.microsoftonline.com\/{tenantid}\/v2.0",
    "claims_supported": [
        "sub",
        "iss",
        "cloud_instance_name",
        "cloud_instance_host_name",
        "cloud_graph_host_name",
        "msgraph_host",
        "aud",
        "exp",
        "iat",
        "auth_time",
        "acr",
        "nonce",
        "preferred_username",
        "name",
        "tid",
        "ver",
        "at_hash",
        "c_hash",
        "email"
    ],
    "request_uri_parameter_supported": false,
    "userinfo_endpoint": "https:\/\/graph.microsoft.com\/oidc\/userinfo",
    "tenant_region_scope": null,
    "cloud_instance_name": "microsoftonline.com",
    "cloud_graph_host_name": "graph.windows.net",
    "msgraph_host": "graph.microsoft.com",
    "rbac_url": "https:\/\/pas.windows.net"
}

As you can see the metadata document helps you with some key information about the Azure AD service.

⇒ Azure AD v2 Sign-On Authentication Request

⇐ Authentication Flows with Azure AD v2

⇑ Azure AD Integration v2.0

⇑⇑ OpenID Tutorials