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To centrally manage Security Hub across an organization, AWS allows you to delegate a member account as the Security Hub administrator. This enables centralized configuration and security insights without directly using the management account, which is a best practice.

Delegating a Non-Management Account: AWS recommends using a designated Security Hub administrator account (different from the management account) for central security configurations.

Security Hub Central Configuration: Configuring Security Hub in this manner ensures that security findings from all member accounts are consolidated and manageable from the designated administrator account.

To direct users to the region that provides the fastest response times, transitioning to a latency routing policy in Amazon Route 53 is the best solution.

Latency-Based Routing:

Latency-based routing allows you to route your traffic to the AWS region that provides the lowest latency.

Implementation:

In each new region (us-east-1 and ap-south-1), create a new Elastic Load Balancer and a new set of EC2 instances to run a copy of the application.

Open the Route 53 console.

Select the hosted zone and choose "Create Record Set."

Create latency-based records pointing to the load balancers in each region.

References:

Amazon Route 53 Latency-Based Routing

If you're using AWS Organizations, check the service control policies for any statements that explicitly deny Amazon S3 access. In particular, check the service control policies for statements denying the s3:PutBucketPolicy action.

Step-by-Step Explanation:

Understand the Problem:

Ensure all users in the organization have read-level access to a specific S3 bucket.

The data should not be accessible outside the organization.

Analyze the Requirements:

Grant read access to users within the organization.

Prevent access from outside the organization.

Evaluate the Options:

Option A: Specify "*" as the principal and PrincipalOrgId as a condition.

This grants access to all AWS principals but restricts it to those within the specified organization using the PrincipalOrgId condition.

Option B: Specify all account numbers as the principal.

This is impractical for a large organization and requires constant updates if accounts are added or removed.

Option C: Specify PrincipalOrgId as the principal.

The PrincipalOrgId condition must be used within a policy, not as a principal.

Option D: Specify the organization's management account as the principal.

This grants access only to the management account, not to all users within the organization.

Select the Best Solution:

Option A: Using "*" as the principal with the PrincipalOrgId condition ensures all users within the organization have the required access while preventing external access.

References:

Amazon S3 Bucket Policies

AWS Organizations Policy Examples

Using "*" as the principal with the PrincipalOrgId condition efficiently grants read access to the S3 bucket for all users within the organization.