# Prerequisites
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Before you start this tutorial, you must complete the prerequisites in [Getting started with CodeDeploy](getting-started-codedeploy.md), which include configuring a user, installing or upgrading the AWS CLI, and creating a service role. You do not have to create an IAM instance profile as described in the prerequisites. On-premises instances do not use IAM instance profiles.

The physical device you will configure as an on-premises instance must be running one of the operating systems listed in [Operating systems supported by the CodeDeploy agent](codedeploy-agent.md#codedeploy-agent-supported-operating-systems).