> ## Documentation Index > Fetch the complete documentation index at: https://docs.replit.com/llms.txt > Use this file to discover all available pages before exploring further. # Reserved VM Deployments > Learn how to publish your app to an always-on cloud server with Reserved VM Deployments. A Reserved VM deployment runs on a virtual machine (VM) which provides dedicated computing resources for your app. This deployment type offers predictable costs and performance without interruptions. They are ideal for the following use cases: * Memory-intensive background tasks * Chat app bots that must stay connected * Always-on API servers Reserved VM Deployments ## Features Reserved VM Deployments include the following features: * **Dedicated resources**: Get consistent app performance on reserved compute resources. * **Custom domains**: Configure a custom domain or use a `.replit.app` URL to access your app. * **Computing resource options**: Choose the VM option that meets your app's performance needs. * **Configurable port mappings**: Define which ports your app exposes to the internet. * **Monitoring**: View logs and monitor your published app's status. ## Usage You can access Reserved VM Deployments in the Publishing Project Editor tool. From the left **Tool dock**: 1. Select All tools icon **All tools** to see a list of Project Editor tools. 2. Select Publishing icon **Publishing**. 3. Select the **Reserved VM** option and then select **Set up your published app**. From the **Search bar**: 1. Select the magnifying glass icon magnifying glass at the top to open the search tool 2. Type "Publishing" to locate the tool and select it from the results. 3. Select the **Reserved VM** option and then select **Set up your published app**. Reserved VM publishing options ### Machine configuration Select the CPU and RAM configuration for the machine that hosts your deployment. You can view the option's cost next to the selected machine size. ### Primary domain Specify the subdomain part of the hostname for your published app. After you publish, you can access your published app at `https://.replit.app`. To learn how to use a custom domain, see [Custom Domains](cloud-services/deployments/custom-domains/). ### Private deployment The private published app feature is available on the Pro and Enterprise plans. Private published apps grant access to your app only to members of your workspace, or to specific users and groups that you invite. When publishing, you can choose between **Public**, **Workspace only**, or **Only you** access. To learn how to set up a private deployment, see [Private Deployments](/cloud-services/deployments/private-deployments/). ### Build command Enter the shell command that compiles or sets up your app before running the Run command in the **Build command** field. For example, to optimize your JavaScript app for a production environment using Vite, you might add the `vite build` command. ### Run command Enter the shell command that launches your task in the **Run command** field. This command should be similar to the one you use for your workflow. For example, to start a Flask app called "myApp", you might add the `flask --app myApp run` command. ### Published app secrets Select **Add published app secret** to add environment variables or secrets your app needs to run securely. If your Replit App has environment variables or secrets, the Publishing tool adds them to the list automatically. ### App type options Select one of the following options: * **Web server**: Select this option if publishing a web app or an app that users can connect to on the internet. * **Background worker**: Select this option if your app does not listen on a port or start a server. When you select **Web Server**, you can customize which ports to expose by performing the following actions: 1. Expand the **Port configuration** section. 2. Select **Networking pane to configure** to open the **Networking** tab, where you can manage the port mappings. For more information on configuring ports, see [Ports](/core-concepts/project-editor/app-setup/ports/). ## Next steps To learn more about publishing, see the following resources: * [Published App Monitoring](/cloud-services/deployments/monitoring-a-deployment/): Learn how to view logs and monitor your scheduled deployment. * [Publishing costs](/billing/deployment-pricing): View the costs associated with publishing. * [Pricing](https://replit.com/pricing/): View the pricing and allowances for each plan type. * [Usage Allowances](/billing/about-usage-based-billing/): Learn about scheduled deployment usage limits and billing units.