Yes, both the public-facing website and the editSuite are built entirely in Flash.
An HTML version of the site, that mirrors the Flash website, is auto-generated for search engine optimization purposes. We have also put together a list of search engine optimization tips that can help you improve your site ranking:
For mobile devices that do not support Flash we have created dedicated websites that are built in HTML5. You can check out how the Mobile sites module can be set up in the topic below: