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

# Systems

A *system* is a collection of [modules](/key-concepts/modules.md), [settings](/key-concepts/settings.md) and basic metadata (name, description etc). They provide the main logical building blocks within Engine deployments.

![Systems have settings and a collection of modules.](/files/-LeJgNwvu3yRHgUe6sss)

Systems often represent physical spaces (such as a meeting room) but can also represent standalone items such as a digital signage endpoint or a non-physical system with information based inputs and outputs.