23 votes
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			 Create an IAM user for each AWS account with read-only permission policies for the auditor, and disable each account when the audit is complete 8.7% (2 votes) 
					  
					Configure an on-premise AD server and enable SAML and identify federation for single sign-on to each AWS account 0.0% (0 votes) 
					  
					Create an IAM role with read-only permissions to all AWS services in each AWS account. Create one auditor IAM account and add a permissions policy that allows the auditor to assume the ARN role for each AWS account that has an assigned role. 87.0% (20 votes) 
					  
					Create a custom identity broker application that allows the auditor to use existing Amazon credentials to Log into the AWS environments 4.3% (1 vote) 
					  
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