# Authentication

> Learn how to authenticate Unity Services using admin or client APIs.

You can authenticate Unity Services using admin or client APIs.

### Authenticate with admin APIs

You can use admin APIs to access and configure Unity Services as an administrator. For more information on authenticating with admin APIs,
refer to the [admin authentication page](/services-web-apis/service-account-auth.md).

### Authenticate with client APIs

You can use client APIs to access Unity Services as a Unity project user. For more information on authenticating with client APIs, refer to the
[client authentication page](/services-web-apis/client-auth.md).