To develop all of that technology, Amazon has quietly assembled a team of over 5,000 people working on Echo and the Alexa ecosystem, Amazon's hardware chief Dave Limp said during an event on Wednesday.
Amazon has over 382,000 employees, so Alexa and Echo represent a tiny portion of the entire company. But rapid hiring growth reflects Amazon's willingness to invest heavily in expanding the Alexa voice platform.
That number is likely to keeping increasing. According to Amazon's jobs site, there are almost 1,500 openings for jobs related to Alexa and Echo.