title: Identity providers for external tenants
description: Learn sign-in and MFA options for customer identity and access management (CIAM), including email, one-time passcodes, social providers, SAML/WS-Fed, and OIDC.
ms.topic: concept-article
ms.date: 10/07/2025
ms.custom: it-pro, seo-july-2024
#customer intent: As an External ID administrator, I want to configure and enable multiple identity providers (such as email one-time passcode, Google, Facebook, Apple, SAML/WS-Fed, and custom OIDC) for external users, so that they can easily sign in and access our apps and resources.
---
- **Password reset**: If you enable email and password sign-in, a password reset link appears on the password page. If the user forgets their password, selecting this link sends a one-time passcode to their email address. After verification, the user can choose a new password.
:::image type="content" source="media/concept-authentication-methods-customers/email-password-sign-in.png" alt-text="Screenshots of the email with password sign-in screens." border="false":::
When you [create a sign-up and sign-in user flow](how-to-user-flow-sign-up-sign-in-customers.md#create-and-customize-a-user-flow), **Email with password** is the default option.
When you enable username sign-in, users can choose to sign in with either their email address or their username. If they choose to sign in with their username, they will be prompted to enter a password, similar to Email and password sign-in. If you [enable password reset](how-to-customize-branding-customers.md#to-customize-self-service-password-reset), users can reset their password by selecting the password reset link on the sign-in page.
:::image type="content" source="media/how-to-sign-in-alias/alias-sign-in.png" alt-text="Screenshot of the username sign-in option.":::
## Email with one-time passcode sign-in
title: Identity providers for external tenants
description: Learn sign-in and MFA options for customer identity and access management (CIAM), including email, one-time passcodes, social providers, SAML/WS-Fed, and OIDC.
ms.topic: concept-article
ms.date: 03/27/2026
ai-usage: ai-assisted
ms.custom: it-pro, seo-july-2024
#customer intent: As an External ID administrator, I want to configure and enable multiple identity providers (such as email one-time passcode, Google, Facebook, Apple, SAML/WS-Fed, and custom OIDC) for external users, so that they can easily sign in and access our apps and resources.
---
- **Password reset**: If you enable email and password sign-in, a password reset link appears on the password page. If the user forgets their password, selecting this link sends a one-time passcode to their email address. After verification, the user can choose a new password.
:::image type="content" source="media/concept-authentication-methods-customers/email-password-sign-in.png" alt-text="Email and password screens shown during local account sign-up and sign-in." border="false":::
When you [create a sign-up and sign-in user flow](how-to-user-flow-sign-up-sign-in-customers.md#create-and-customize-a-user-flow), **Email with password** is the default option.
When you enable username sign-in, users can choose to sign in with either their email address or their username. If they choose to sign in with their username, they will be prompted to enter a password, similar to Email and password sign-in. If you [enable password reset](how-to-customize-branding-customers.md#to-customize-self-service-password-reset), users can reset their password by selecting the password reset link on the sign-in page.
:::image type="content" source="media/how-to-sign-in-alias/alias-sign-in.png" alt-text="Username sign-in option on the sign-in page.":::