Alexa vs Amazon Lex: What are the differences?
Alexa: A cloud-based voice service *. It is a cloud-based voice service and the brain behind tens of millions of devices including the Echo family of devices, FireTV, Fire Tablet, and third-party devices. You can build voice experiences, or skills, that make everyday tasks faster, easier, and more delightful for customers; *Amazon Lex:** Build conversational voice and text interfaces, using the same deep learning technologies as Alexa. Lex provides the advanced deep learning functionalities of automatic speech recognition (ASR) for converting speech to text, and natural language understanding (NLU) to recognize the intent of the text, to enable you to build applications with highly engaging user experiences and lifelike conversational interactions.
Alexa and Amazon Lex are primarily classified as "Voice and SMS" and "Chatbot Platforms &" tools respectively.
Innovative Virtual Computing Solutions, Shelf, and Lumeneo.com are some of the popular companies that use Amazon Lex, whereas Alexa is used by Feather Direct, LLC, Crit Cola, and Salte. Amazon Lex has a broader approval, being mentioned in 3 company stacks & 15 developers stacks; compared to Alexa, which is listed in 3 company stacks and 10 developer stacks.