---
title: "Office 365 Single-Sign-On"
slug: "office-365-single-sign-on"
updated: 2023-11-30T09:41:09Z
published: 2023-11-30T09:41:09Z
canonical: "help.lanteria.com/office-365-single-sign-on"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.lanteria.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Office 365 Single-Sign-On

In order to provide Single-Sign-On, Lanteria uses IdentityServer4 and Microsoft Entra ID. IdentityServer is a middleware that adds the spec compliant OpenID Connect and OAuth 2.0 endpoints to an arbitrary ASP.NET Core application ([http://docs.identityserver.io/](http://docs.identityserver.io/)).

![](https://cdn.document360.io/c315c68d-2799-4fcc-9a39-084315b58f14/Images/Documentation/img013(3).png)

Web app / API application must be created in Microsoft Entra ID and granted delegated permissions to sign in and read the user profile.