Our game servers are running on Google Cloud Compute Infrastructure. We are running in all available datacenters to be as close to the user as possible to reduce the latency. Sending all our commands through the cloud allows us to make everything browser based, without any setup required, like downloading apps, connecting bluetooth or joining specific WIFI networks. We'll try to improve it even further later this year by introducing WebRTC.
Many of our games try to make up for the controller latency by adjusting the position of the player to where they would have been without the lag (Quickminds, AirShields, Hitparade).
AirConsole game developer here - A colleague and I made a game called Hit Parade which you'll find in the store. We work with Unity 3D, using it's webGL export. One challenge for me personally was optimising the game enough so it would run smoothly even on older computers.