--- title: "Ncloud Single Sign-On prerequisites" slug: "sso-spec" tags: ["Ncloud Single Sign-On"] updated: 2026-09-17T09:23:56Z published: 2026-09-17T09:23:56Z canonical: "guide.ncloud-docs.com/sso-spec" --- > ## Documentation Index > Fetch the complete documentation index at: https://guide.ncloud-docs.com/llms.txt > Use this file to discover all available pages before exploring further. # Ncloud Single Sign-On prerequisites Available in Classic and VPC Check the supported environment, registration limitations, and usage fee for best use of Ncloud Single Sign-On. ## Cloud environment specifications The cloud environment specifications supported by Ncloud Single Sign-On are as follows: | Item | Specifications | | --- | --- | | Region (Zone) | Korea, U.S., Singapore, Japan, and Germany | | Platform | VPC, Classic | | Languages | Korean, English, and Japanese | Note If you are curious about the VPC environment, see [Service introduction](https://www.ncloud.com/product/networking/vpc) on the NAVER Cloud Platform portal, and if you want to know whether the VPC environment is supported for each service, see the [Ncloud user environment guide](/docs/en/environment-environment-1-1). ## Registration limits There is a limit to the number of applications that can be registered in Ncloud Single Sign-On. The number of applications you can register is up to 100 per account. ## Pricing information Ncloud Single Sign-On is charged based on the amount of time you use the registered application. It is available for free for a limited time, and we also provide a separate notification 1 month before switching to a paid service. For the detailed standard for Ncloud Single Sign-On's usage fee, see the Pricing plan in **Services > Management & Governance > Ncloud Single Sign-On** on the portal. - [**Portal > Services > Management & Governance > Ncloud Single Sign-On**](https://www.ncloud.com/product/management/NcloudSingleSignon)