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SAP-C02 · Question #537

A company is expanding. The company plans to separate its resources into hundreds of different AWS accounts in multiple AWS Regions. A solutions architect must recommend a solution that denies…

The correct answer is C. Launch an AWS Control Tower landing zone. Create OUs and attach SCPs that deny access to. To deny access to any operations outside of specifically designated AWS Regions across hundreds of accounts in an expanding organization, AWS Control Tower with OUs and SCPs is the recommended solution.

Submitted by dimitri_ru· Mar 6, 2026Design Solutions for Organizational Complexity

Question

A company is expanding. The company plans to separate its resources into hundreds of different AWS accounts in multiple AWS Regions. A solutions architect must recommend a solution that denies access to any operations outside of specifically designated Regions. Which solution will meet these requirements?

Options

  • ACreate IAM roles for each account. Create IAM policies with conditional allow permissions that
  • BCreate an organization in AWS Organizations. Create IAM users for each account. Attach a policy
  • CLaunch an AWS Control Tower landing zone. Create OUs and attach SCPs that deny access to
  • DEnable AWS Security Hub in each account. Create controls to specify the Regions where an

How the community answered

(56 responses)
  • A
    7% (4)
  • B
    4% (2)
  • C
    77% (43)
  • D
    13% (7)

Why each option

To deny access to any operations outside of specifically designated AWS Regions across hundreds of accounts in an expanding organization, AWS Control Tower with OUs and SCPs is the recommended solution.

ACreate IAM roles for each account. Create IAM policies with conditional allow permissions that

Creating and managing IAM roles and policies with conditional allow permissions for each of hundreds of accounts is not scalable and would be operationally complex and error-prone.

BCreate an organization in AWS Organizations. Create IAM users for each account. Attach a policy

Creating IAM users for each account and attaching policies individually is not scalable or efficient for hundreds of accounts, and IAM policies are not as robust as SCPs for organization-wide restrictions.

CLaunch an AWS Control Tower landing zone. Create OUs and attach SCPs that deny access toCorrect

AWS Control Tower helps set up and govern a secure, multi-account AWS environment and integrates with AWS Organizations. By creating Organizational Units (OUs) and attaching Service Control Policies (SCPs) to them, a solutions architect can centrally define and enforce guardrails, such as denying access to operations outside designated Regions, across all accounts within those OUs. This provides a high-level, preventative control that applies to all IAM users and roles in the affected accounts.

DEnable AWS Security Hub in each account. Create controls to specify the Regions where an

AWS Security Hub is a security posture management service that aggregates findings and monitors security best practices; it does not enforce region restrictions or prevent actions from being taken.

Concept tested: Centralized multi-account region restriction using SCPs

Source: https://aws.amazon.com/controltower/

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