B2B collaboration overview
Azure Active Directory (Azure AD) B2B collaboration is a feature within External Identities that lets you invite guest users to collaborate with your organization. With B2B collaboration, you can securely share your company's applications and services with external users, while maintaining control over your own corporate data. Work safely and securely with external partners, large or small, even if they don't have Azure AD or an IT department.
A simple invitation and redemption process lets partners use their own credentials to access your company's resources. You can also enable self-service sign-up user flows to let external users sign up for apps or resources themselves. Once the external user has redeemed their invitation or completed sign-up, they're represented in your directory as a user object. B2B collaboration user objects are typically given a user type of "guest" and can be identified by the #EXT# extension in their user principal name.
Developers can use Azure AD business-to-business APIs to customize the invitation process or write applications like self-service sign-up portals. For licensing and pricing information related to guest users, refer to Azure Active Directory External Identities pricing.
We've begun rolling out a change to turn on the email one-time passcode feature for all existing tenants and enable it by default for new tenants. We're enabling the email one-time passcode feature because it provides a seamless fallback authentication method for your guest users. However, if you don't want to allow this feature to turn on automatically, you can disable it. Soon, we'll stop creating new, unmanaged ("viral") Azure AD accounts and tenants during B2B collaboration invitation redemption.
Collaborate with any partner using their identities
With Azure AD B2B, the partner uses their own identity management solution, so there is no external administrative overhead for your organization. Guest users sign in to your apps and services with their own work, school, or social identities.
- The partner uses their own identities and credentials, whether or not they have an Azure AD account.
- You don't need to manage external accounts or passwords.
- You don't need to sync accounts or manage account lifecycles.
Manage external access with inbound and outbound settings
B2B collaboration is enabled by default, but comprehensive admin settings let you control your B2B collaboration with external partners and organizations:
For B2B collaboration with other Azure AD organizations, you can use cross-tenant access settings to manage inbound and outbound B2B collaboration and scope access to specific users, groups, and applications. You can set a default configuration that applies to all external organizations, and then create individual, organization-specific settings as needed. Using cross-tenant access settings, you can also trust multi-factor (MFA) and device claims (compliant claims and hybrid Azure AD joined claims) from other Azure AD organizations.
You can use external collaboration settings to limit who can invite external users, allow or block B2B specific domains, and set restrictions on guest user access to your directory.
Easily invite guest users from the Azure AD portal
As an administrator, you can easily add guest users to your organization in the Azure portal.
- Create a new guest user in Azure AD, similar to how you'd add a new user.
- Assign guest users to apps or groups.
- Send an invitation email that contains a redemption link, or send a direct link to an app you want to share.
- Guest users follow a few simple redemption steps to sign in.
Allow self-service sign-up
With a self-service sign-up user flow, you can create a sign-up experience for external users who want to access your apps. As part of the sign-up flow, you can provide options for different social or enterprise identity providers, and collect information about the user. Learn about self-service sign-up and how to set it up.
You can also use API connectors to integrate your self-service sign-up user flows with external cloud systems. You can connect with custom approval workflows, perform identity verification, validate user-provided information, and more.
Use policies to securely share your apps and services
You can use authentication and authorization policies to protect your corporate content. Conditional Access policies, such as multi-factor authentication, can be enforced:
- At the tenant level.
- At the application level.
- For specific guest users to protect corporate apps and data.
Let application and group owners manage their own guest users
You can delegate guest user management to application owners so that they can add guest users directly to any application they want to share, whether it's a Microsoft application or not.
- Administrators set up self-service app and group management.
- Non-administrators use their Access Panel to add guest users to applications or groups.
Customize the onboarding experience for B2B guest users
Bring your external partners on board in ways customized to your organization's needs.
- Use Azure AD entitlement management to configure policies that manage access for external users.
- Use the B2B collaboration invitation APIs to customize your onboarding experiences.
Integrate with Identity providers
Azure AD supports external identity providers like Facebook, Microsoft accounts, Google, or enterprise identity providers. You can set up federation with identity providers so your external users can sign in with their existing social or enterprise accounts instead of creating a new account just for your application. Learn more about identity providers for External Identities.
Integrate with SharePoint and OneDrive
You can enable integration with SharePoint and OneDrive to share files, folders, list items, document libraries, and sites with people outside your organization, while using Azure B2B for authentication and management. The users you share resources with are typically added to your directory as guests, and permissions and groups work the same for these guests as they do for internal users. When enabling integration with SharePoint and OneDrive, you'll also enable the email one-time passcode feature in Azure AD B2B to serve as a fallback authentication method.
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