description: Discover the steps for setting up a customer identity and access management (CIAM) solution in an external tenant, including creating a tenant, registering apps, and setting up user flows for sign-in.
ai-usage: ai-assisted
ms.topic: concept-article
ms.date: 04/24/2026
ms.custom: it-pro, seo-july-2024
[!INCLUDE [applies-to-external-only](../includes/applies-to-external-only.md)]
Microsoft Entra External ID is a customizable, extensible solution for adding customer identity and access management (CIAM) to your app. Because it's built on the Microsoft Entra platform, you benefit from consistency in app integration, tenant management, and operations across your workforce and customer scenarios. When designing your configuration, it's important to understand the components of an external tenant and the Microsoft Entra features that are available for your customer scenarios.
This article provides a general framework for integrating your app and configuring External ID. It describes the capabilities available in an external tenant and outlines the important planning considerations for each step in your integration.
Adding secure sign-in to your app and setting up a customer identity and access management involves five main steps:
:::image type="content" source="media/concept-planning-your-solution/overview-setup-steps-inline.png" lightbox="media/concept-planning-your-solution/overview-setup-steps-inline.png" alt-text="Diagram showing an overview of the five setup steps: create a tenant, choose an authentication approach, register your application, integrate a sign-in flow, and customize and secure your sign-in.":::
This article describes each of these steps and outlines important planning considerations. In the following table, select a **Step** for details and planning considerations, or go directly to the **How-to guides**.
description: Discover the steps for setting up a customer identity and access management (CIAM) solution in an external tenant, including creating a tenant, registering apps, and setting up user flows for sign-in.
ai-usage: ai-assisted
ms.topic: concept-article
ms.date: 05/21/2026
ms.custom: it-pro, seo-july-2024
[!INCLUDE [applies-to-external-only](../includes/applies-to-external-only.md)]
Microsoft Entra External ID adds customer identity and access management (CIAM) to your app on the Microsoft Entra platform, so you get consistent app integration, tenant management, and operations across workforce and customer scenarios.
This article is a decision-making guide for the six planning steps. Each section summarizes the key choices and links to the canonical how-tos and reference docs.
:::image type="content" source="media/concept-planning-your-solution/planning-flow-horizontal.png" alt-text="Diagram showing the six setup steps as a horizontal flow: create an external tenant, choose an authentication approach, register your application, integrate a sign-in flow, secure your sign-in, and customize your sign-in.":::
Jump to a step for details, or go straight to the **How-to guides**.
| Step | How-to guides |
|---------|---------|