Quick Answer
The answer is B2B collaboration. This Microsoft Entra B2B feature is correct because it enables organizations to secure external partner access to specific SharePoint sites without creating new accounts, allowing partners to use their own existing work, school, or social identities. Technically, B2B collaboration works through an invitation-based redemption process where the external user is represented as a guest object in the directory, granting fine-grained access control via SharePoint site sharing policies without provisioning new credentials. On the SC-900 exam, this question tests your understanding of identity governance and external access scenarios, often appearing as a trap where B2B direct connect or Azure AD B2C might seem plausible—remember that B2B collaboration is for inviting external partners into your tenant, while B2C is for customer-facing apps. A helpful memory tip: think “B2B = Bring your own identity for Business partners, no new accounts needed.”
This SC-900 practice question tests your understanding of describe the capabilities of microsoft security solutions. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
An organization wants to provide a secure way for external partners to access specific SharePoint sites without creating new user accounts. What Microsoft Entra B2B feature should they use?
Azure AD B2C
Why wrong: For customer identity management.
Direct federation
Why wrong: Federation with another IdP.
Azure AD Domain Services
Why wrong: Provides domain services for legacy apps.
B2B collaboration
Enables external user access using their own identities.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
B2B collaboration
B2B collaboration is the correct Microsoft Entra B2B feature because it allows external partners to access specific SharePoint sites using their own identities (e.g., work or social accounts) without requiring new user accounts or passwords to be created in the organization's tenant. This is achieved through invitation-based redemption, where the partner user is represented as a guest user object in the directory, enabling fine-grained access control via SharePoint site sharing policies.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Azure AD B2C
Why it's wrong here
For customer identity management.
Direct federation
Why it's wrong here
Federation with another IdP.
Azure AD Domain Services
Why it's wrong here
Provides domain services for legacy apps.
B2B collaboration
Why this is correct
Enables external user access using their own identities.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
The trap here is that candidates confuse B2B collaboration (for external partner access with existing identities) with Azure AD B2C (for customer-facing identity management), or mistakenly think Direct federation is required for partner access when B2B collaboration already handles the invitation and redemption process without creating new accounts.
Detailed technical explanation
Under the hood, B2B collaboration uses the SAML or OIDC protocol to redeem invitations, and the external user's identity is stored as a B2B guest user (UserType = Guest) in the Entra ID tenant. This guest object can be assigned to SharePoint site groups (e.g., Visitors, Members) via the SharePoint admin center or PowerShell, enabling access without syncing or provisioning a full account. A subtle behavior is that B2B collaboration supports cross-tenant access settings, allowing admins to block or allow specific external organizations via inbound trust policies.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
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FAQ
Describe the capabilities of Microsoft security solutions — This question tests Describe the capabilities of Microsoft security solutions — Read the scenario before looking for a memorised answer..
The correct answer is: B2B collaboration — B2B collaboration is the correct Microsoft Entra B2B feature because it allows external partners to access specific SharePoint sites using their own identities (e.g., work or social accounts) without requiring new user accounts or passwords to be created in the organization's tenant. This is achieved through invitation-based redemption, where the partner user is represented as a guest user object in the directory, enabling fine-grained access control via SharePoint site sharing policies.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This SC-900 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SC-900 exam.
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