Via its Alexa Blog, Amazon has announced that it has moved its very important Echo Spatial Perception feature to a cloud-based platform; it was previously device dependent:
With Cloud ESP, all existing and new Alexa-enabled devices get the ESP feature with no requirement for device-side software changes. Cloud ESP also offers superior accuracy — even in noisy environments — and because Alexa is always getting smarter, the feature will continue to improve over time.
This seems to include third-party devices with Alexa as well, which bodes well for my recently acquired Sonos One. I’ve found even with ESP that the wrong Alexa device often responds to my requests, so here’s hoping that this move will make it more robust.