Reach out to REI and you can find out how to rent a tent. Summon Starbucks, and you can order up a decaf soy latte. Shout out to UPS, and you can track a package or check your balance. These are just a few examples of how brands are providing services using voice-based applications that piggy-back on "virtual assistants" like Amazon's Alexa, Google's Assistant, and Apple's Siri.
These "intelligent agents" – which rely on voice interactions – are gaining ground as a means for consumers to interact with the internet. Measurement and analytics company comScore estimates that as of March...