Heat can launch multiple composite cloud applications and manage cloud infrastructure based on templates on an OpenStack instance. Heat integrates with telemetry to autoscale a system to match load needs. Templates in Heat try to comply with AWS CloudFormation formats, and relationships between resources can be specified in a similar manner (for example, this volume is connected to this server). 

A Heat template may resemble the following:

heat_template_version: 2015-04-30

description: example template

resources:
  my_instance:
    type: OS::Nova::Server
    properties:
      key_name: { get_param: key_name }
      image: { get_param: image }
      flavor: { get_param: flavor }
      admin_pass: { get_param: admin_pass }
      user_data:
        str_replace:
          template: |
            #!/bin/bash
            echo hello_world