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How Amazon built Alexa and Echo

Amazon took years of persistent experiments and trial and error to build a new voice-based computing experience. The Verge examined the internal process behind the creation of the Echo smart speaker and Alexa voice assistant. Jeff Bezos had long believed computing would move from keyboards and screens to voice. Engineers faced challenges in understanding speech and context, and in improving speed and accuracy. Competition and an unusual quiet launch strategy also shaped development and early reception.