The answer is to use AWS IAM Identity Center to create permission sets that grant access to accounts, because IAM Identity Center automatically provisions and manages the necessary IAM roles with the correct trust policy pointing to its own identity provider. This centralizes IAM federation with IAM Identity Center by eliminating the need to manually configure trust relationships across every account, ensuring all roles uniformly trust the same IdP. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this scenario tests your understanding of how IAM Identity Center abstracts role management—a common trap is attempting to manually create cross-account roles with an external IdP, which violates the principle of centralized federation. Remember that IAM Identity Center acts as the single source of truth for both users and roles, so you never need to touch individual account trust policies. Memory tip: think of permission sets as the “master key” that IAM Identity Center uses to automatically unlock and configure roles in every account.
SAP-C02 Practice Question: Design Solutions for Organizational Complexity
This SAP-C02 practice question tests your understanding of design solutions for organizational complexity. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
A company has a multi-account AWS environment and wants to centralize the management of IAM roles. The security team needs to ensure that all IAM roles across all accounts trust the same identity provider (IdP) for federated access. The company uses AWS IAM Identity Center (successor to AWS SSO) for user management. Which solution should be implemented?
Use AWS IAM Identity Center to create permission sets that grant access to accounts. IAM Identity Center automatically creates and manages the necessary IAM roles with the IdP trust.
IAM Identity Center centralizes federation and role management.
B
Use an SCP to require that all IAM roles trust the corporate IdP.
Why wrong: SCPs cannot modify trust policies.
C
Create IAM roles in each account with a trust policy that allows the corporate IdP.
Why wrong: Requires manual setup in each account.
D
Use AWS CloudFormation StackSets to deploy IAM roles with the IdP trust policy to all accounts.
Why wrong: Still requires manual management of trust policies.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use AWS IAM Identity Center to create permission sets that grant access to accounts. IAM Identity Center automatically creates and manages the necessary IAM roles with the IdP trust.
AWS IAM Identity Center (formerly AWS SSO) is designed to centralize user access across multiple AWS accounts. When you create permission sets in IAM Identity Center, it automatically provisions the necessary IAM roles in each target account with a trust policy that trusts the IAM Identity Center's own identity provider. This eliminates the need to manually create or manage IAM roles and their trust policies, ensuring all accounts use the same IdP for federated access.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Use AWS IAM Identity Center to create permission sets that grant access to accounts. IAM Identity Center automatically creates and manages the necessary IAM roles with the IdP trust.
Why this is correct
IAM Identity Center centralizes federation and role management.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use an SCP to require that all IAM roles trust the corporate IdP.
Why it's wrong here
SCPs cannot modify trust policies.
✗
Create IAM roles in each account with a trust policy that allows the corporate IdP.
Why it's wrong here
Requires manual setup in each account.
✗
Use AWS CloudFormation StackSets to deploy IAM roles with the IdP trust policy to all accounts.
Why it's wrong here
Still requires manual management of trust policies.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse SCPs as a mechanism to enforce trust policies, but SCPs cannot modify IAM role trust relationships; they only control the maximum permissions for IAM users and roles within an account.
Detailed technical explanation
How to think about this question
IAM Identity Center uses a service-linked role (AWSServiceRoleForSSO) and creates IAM roles in each account with a trust policy that references the IAM Identity Center's own IdP (arn:aws:iam::*:saml-provider/AWSSSO_*_DO_NOT_DELETE). When a user authenticates via IAM Identity Center, the service assumes the appropriate role in the target account using SAML 2.0 federation, and the session is automatically scoped to the permissions defined in the permission set. This ensures that all accounts trust the same IdP without manual intervention.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Design Solutions for Organizational Complexity — This question tests Design Solutions for Organizational Complexity — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use AWS IAM Identity Center to create permission sets that grant access to accounts. IAM Identity Center automatically creates and manages the necessary IAM roles with the IdP trust. — AWS IAM Identity Center (formerly AWS SSO) is designed to centralize user access across multiple AWS accounts. When you create permission sets in IAM Identity Center, it automatically provisions the necessary IAM roles in each target account with a trust policy that trusts the IAM Identity Center's own identity provider. This eliminates the need to manually create or manage IAM roles and their trust policies, ensuring all accounts use the same IdP for federated access.
What should I do if I get this SAP-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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