Amazon has not shared if any third-party platforms will be granted access to Alexa Cast. “We’ll continue to improve this feature and expand support over time,” a representative told The Verge.
The feature is very similar to the Google Cast technology that has been around for several years. Google Cast allows phone controls over audio and video playback on smart TVs and speakers. Other wireless speaker services already have similar options for directions by phone rather than by voice. For instance, a Sonos One playing Spotify can be controlled from either company’s mobile apps.