The web service embeds and serves the static files for the Infinite Scale Web Client.
Note that clients will respond with a connection error if the web service is not available.

The web service also provides a minimal API for branding functionality like changing the logo shown.

Custom Compiled Web Assets

If you want to use your custom compiled web client assets instead of the embedded ones, then you can do that by setting the WEB_ASSET_PATH variable to point to your compiled files. See ownCloud Web / Getting Started and ownCloud Web / Setup with oCIS for more details.

WebUI Options

Beside theming, the behaviour of the embedded WebUI can be configured via options. See the environment variables WEB_OPTION_xxx for more details.