Landsat, AWS, and Esri

That's a pretty nice connection: Landsat data have been freely-accessible for years, but accessing them is now easier with Amazon hosting them and Esri (and others) offering new tools for 'streaming' and online, on-the-fly analysis. Esri's Unlock Earth's Secrets App, for example, demonstrates nicely how Landsat data are made accessible on Amazon via Esri.

Now, even better, you can even specify any band combination you want for display and enhancement right in ArcGIS Online!

Of course it is frustrating as usual that the spatial resolution of those free satellite data is only 15 or 30 m and all the really cool high-resolution data remain, in practice, off-limits to the public.