© 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. Mark Ryland, Director, Office of the CISO, AWS Security AWS Control Tower 1 © 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. AWS © 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. AWS © 2018, Amazon Web Services, Inc. or its Affiliates. All rights reserved. © 2018, Amazon Web S