There are over 100 million users of Alexa devices. And a growing number of users on other voice assistant platforms such as Google Home. A growing number of those use the devices regularly; at least three times a day. Voice assistants can be used passively while doing something else. This enables new types of experiences that aren't common on phones and tablets. They can ask to have lights turned on/off when entering a room, or to order a pizza while watching a football game. Customers can directly purchase with only their voice. This makes Alexa development ideal for companies with an existing (or growing) userbase of customers with accounts.