Which combination of steps should the solutions architect take to troubleshoot this issue?
(Choose two.)
Verify that Systems Manager Agent is installed on the instance and is running
Verify that the instance is assigned an appropriate IAM role for Systems Manager.
Verify the existence of a VPC endpoint on the VPC.
Verify that the AWS Application Discovery Agent is configured.
Verify the correct configuration of service-linked roles for Systems Manager.
Explanations:
The Systems Manager Agent (SSM Agent) must be installed and running on the EC2 instance for it to be recognized as a managed instance in AWS Systems Manager.
The EC2 instance must be assigned an IAM role with the necessary permissions (e.g.,AmazonSSMManagedInstanceCore) to communicate with AWS Systems Manager.
A VPC endpoint for Systems Manager is not required unless the instance is in a private subnet without internet access. This is not related to this issue.
The AWS Application Discovery Agent is for discovering and mapping on-premises environments during migrations, not for EC2 instance management via Systems Manager.
Service-linked roles are automatically created when needed and are not typically the cause of issues with managed instance recognition for Systems Manager.
To the best of my knowledge, the answer is:
Verify that Systems Manager Agent is installed on the instance and is running