# `AWS-StartEC2Instance`
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**Description**

Start one or more Amazon Elastic Compute Cloud (Amazon EC2) instances.

[Run this Automation (console)](https://console.aws.amazon.com/systems-manager/automation/execute/AWS-StartEC2Instance)

**Document type**

Automation

**Owner**

Amazon

**Platforms**

Linux, macOS, Windows

**Parameters**
+ AutomationAssumeRole

  Type: String

  Description: (Optional) The Amazon Resource Name (ARN) of the AWS Identity and Access Management (IAM) role that allows Systems Manager Automation to perform the actions on your behalf. If no role is specified, Systems Manager Automation uses the permissions of the user that starts this runbook.
+ InstanceId

  Type: StringList

  Description: (Required) EC2 instances to start.