Infrastructure is in the news, and specifically so is broadband. I came across this app today from National Telecommunications and Information Association (NTIA) that shows indicators of broadband need.
What I really like is how they embedded this WAB app in their website, plus added a view full link to open the application fully. IMHO it's a well-crafted application, with excellent cartography and publishing tradecraft behind it.

I think it's a great example of leveraging Web AppBuilder and ArcGIS Online to create and expressive experience that takes complicated data and makes it easier to understand. I also like the way that the app provides a way to download source content so you can take it and make your own derivative maps and apps.