# Fleet These files allow you to configure, patch, and secure computing devices for your organization. Whether you're making changes by hand or spinning them up from Slack or Teams using a tool like Claude or Kilo Code _(e.g. "Make our endpoints compliant with ISO 27001" or "Fix CVE-2026-XXXX")_, your team reviews, merges, and it deploys to thousands of endpoints in seconds. This makes it straightforward to instantly rollback a change, and history is fully tracked. You can read more about the anatomy of these files and what they do in [Fleet's documentation](https://fleetdm.com/docs/configuration/yaml-files). You can also opt to manage particular aspects of Fleet in the graphical user interface _instead_, such as software or labels. > Unsure? Talk to a human at fleetdm.com/support ## What is Fleet? Fleet is high-agency device management software. It is especially popular with [IT and security teams who manage lots of endpoints](https://fleetdm.com/customers). All source code [is public](https://fleetdm.com/transparency) and the product is supported by a [company called Fleet Device Management](https://fleetdm.com/handbook/company) that enrolls millions of laptops, tablets, phones, servers, and other computing devices in 90+ countries.