# What is an Image An image in PMO refers to an OpenStack Glance image. An image is a collection of software resources that emulate an operating system environment on a physical computing device. An image comprises a virtual operating system environment that can be ported from one physical computing device to another physical computing device. It is possible to install user applications on an image just as you could on a physical computing device having an operating system installed on it. ## Images with cloud-init packages Images with cloud-init are cloud ready, and such images offer the ability to automate typical server bootstrapping and configuration operations. ## Images without cloud-init packages Operating systems without cloud-init require the user to either manually perform configuration changes after VM creation, or automate these tasks utilizing a separate configuration management tool such as Puppet, Ansible, Salt, or Chef. ## Image Properties When deploying a virtual machine from an image, image properties are passed to the PMO VM placement engine. They impact what resources the VM can be provisioned on. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.platform9.com/managed-openstack/images/images-images.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.