AWS Systems Manager Change Manager is no longer open to new customers. Existing customers can continue to use the service as normal. For more information, see AWS Systems Manager Change Manager availability change.
Infrastructure security in AWS Systems Manager
As a managed service, AWS Systems Manager is protected by AWS global network security. For
information about AWS security services and how AWS protects infrastructure, see AWS Cloud Security
You use AWS published API calls to access Systems Manager through the network. Clients must support the following:
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Transport Layer Security (TLS). We require TLS 1.2 and recommend TLS 1.3.
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Cipher suites with perfect forward secrecy (PFS) such as DHE (Ephemeral Diffie-Hellman) or ECDHE (Elliptic Curve Ephemeral Diffie-Hellman). Most modern systems such as Java 7 and later support these modes.