Helpful image and breakdown of "what is covered" by the viewer/project

docs/latest/essentials/scope-of-project.md

@@ -1 +1,66 @@
 # Scope of Project
+
+The OHIF Viewer is a web based medical imaging viewer. This allows it to be used
+on almost any device, anywhere. The OHIF Viewer is what is commonly reffered to
+as a ["Dumb Client"][simplicable]
+
+> A dumb client is software that fully depends on a connection to a server or
+> cloud service for its functionality. Without a network connection, the
+> software offers nothing useful. - [simplicable.com][simplicable]
+
+While the Viewer persists some data, it's scope is limited to caching things
+like user preferences and previous query paramaters. Because of this, the Viewer
+has been built to be highly configurable to work with almost any web accessible
+data source.
+
+![scope-of-project diagram](./../assets/img/scope-of-project.png)
+
+To be more specific, the OHIF Viewer is a collection of HTML, JS, and CSS files.
+These can be delivered to your end users however you would like:
+
+- From the local networok
+- From a remote web server
+- From a CDN (content delivery network)
+- From a service-worker's cache
+- etc.
+
+These "static asset" files are referred to collectively as a "Progressive Web
+Application" (PWA), and have the same capabilities and limitations that all PWAs
+have.
+
+All studies, series, images, imageframes, metadata, and the images themselves
+must come from an external source. There are many, many ways to provide this
+information, the OHIF Viewer's scope **DOES NOT** encompass providing _any_
+data; only the configuration necessary to interface with one or more of these
+many data sources. The OHIF Viewer's scope **DOES** include configuration and
+support for services that are protected with OpenID-Connect.
+
+In an effort to aide our users and contributors, we attempt to provide several
+[deployment and hosting recipes](./../deployment/index.md) as potential starting
+points. These are not meant to be rock solid, production ready, solutions; like
+most recipes, they should be augmented to best fit you and your organization's
+taste, preferences, etc.
+
+## FAQ
+
+_Am I able to cache studies for offline viewing?_
+
+Not currently. A web page's offline cache capabilities are limited and somewhat
+volatile (mostly imposed at the browser vendor level). For more robust offline
+caching, you may want to consider a server on the local network, or packaging
+the OHIF Viewer as a desktop application.
+
+_Does the OHIF Viewer work with the local filesystem?_
+
+It is possible to accomplish this through extensions; however, for an user
+experience that accomodates a large number of studies, you would likely need to
+package the OHIF Viewer as an [Electron app][electron].
+
+<!--
+  Links
+  -->
+
+<!-- prettier-ignore-start -->
+[simplicable]: https://simplicable.com/new/dumb-client
+[electron]: https://electronjs.org/
+<!-- prettier-ignore-end -->