If you're talking about the command "File > Web Dashboard" in InDesign CC 2015, it's connected with the new Publish Online feature. There's a button called Publish Online on the Application Bar. It allows you to publish and distribute your InDesign document via Adobe servers. See Help > InDesign Help and look at the New Features section. The Web Dashboard lets you view and delete publications you've put online via the service.
Brilliant decoding Steve!