> For the complete documentation index, see [llms.txt](https://listing-nb.gitbook.io/olo-full-app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://listing-nb.gitbook.io/olo-full-app/high-level-architecture.md).

# High Level Architecture

![](/files/-MUITSsIAHXgU7rgfVvy)

* User Mobile App communicates with only API Server
* Web dashboard communicates with only API Server