> For the complete documentation index, see [llms.txt](https://help.launchpal.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.launchpal.com/welcome/key-concepts.md).

# Key Concepts

Here is a quick summary of concepts within LaunchPal:

* [**Projects**](https://github.com/ajph/launcher/tree/1f22876bcd20630b81ec6355e46bbe94b573ef9b/projects.md) are like campaigns. They are a collection of files and/or an App that you want to host on the web.
* [**Apps**](/applications/applications.md) are the core software or functionality for your project . For now each project is one app, but in future we may allow you to have multiple apps in a project
* [**Servers**](/hosts/hosts.md) host your project and app. They should be treated as disposable parts of your business that you start and destroy as you launch and kill campaigns.
* [**Domains**](https://github.com/ajph/launcher/tree/1f22876bcd20630b81ec6355e46bbe94b573ef9b/domains.md) can be associated with any project or app. You can create as many subdomains for a domain as you want.
* [**Templates**](https://github.com/ajph/launcher/tree/1f22876bcd20630b81ec6355e46bbe94b573ef9b/templates.md) are a snapshot of a project to make it super easy to save and recreate your favorite setup.