Correct answer - "Enable Federated Identities integration with Cognito" : Federation enables you
to manage access to your AWS Cloud resources centrally. With federation, you can use single
sign-on (SSO) to access your AWS accounts using credentials from your corporate directory.
"Put your IAM credentials onto the production instance" - Its never a good practice to put IAM
credentials onto your applications instead use IAM roles
"IAM Roles for EC2" - IAM roles are recommended for access control but for on premise servers
this is not the way to go about accessing AWS services
"Create an IAM user for your production instances, and run aws configure there" - This option
will require you enter your credentials in which case we want to stay away from in production
servers