Hardening Endpoints and Patch Manager

Secure access is not enough; the instances themselves must stay hardened and patched. AWS Systems Manager (SSM) provides Patch Manager and related tools to keep an entire fleet up to date and configured correctly. Endpoint hygiene at scale is a recurring SCS-C02 theme, since unpatched systems are a leading breach cause.

Most successful attacks exploit known vulnerabilities that a patch would have fixed. In a large fleet, manually tracking which instance needs which update is impossible. Automating patch management closes the window between a vulnerability's disclosure and its remediation, directly reducing risk across every workload.