A company has an application running on a fleet of Microsoft Windows instances. Patches to the operating system need to be applied each month. AWS Systems Manager Patch Manager is used to apply the patches on a schedule. When the fleet is being patched, customers complain about delayed service responses. What can be done to ensure patches are deployed with MINIMAL customer impact?

Topic #: - All AWS-SysOps Questions

A. Change the number of instances patched at any one time to 100%.
B. Create a snapshot of each server in the fleet using a Systems Manager Automation document before starting the patch process.
C. Configure the maintenance window to patch 10% of the instances in the patch group at a time.
D. Create a patched Amazon Machine Image (AMI). Configure the maintenance window option to deploy the patched AMI on only 10% of the fleet at a time.

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