Alexa -
Alexa is amazons voice service in the cloud, can be communicated to Alexa using Echo.In the back end it is talking to Lambda. Lex drives Alexa. Now there is no longer any need for Echo, this can be embedded in all kinds of devices.
Polly-
Polly is the most advanced text to speech service on the planet. Can use 47 voices and available in 24 languages. Text is converted in MP3. It uses synthesis speech mark up language and stores the MP3 file in S3 which stores the files as objects.Machine Learning -
We give AWS a data set (name, married, age, occupation, etc) we tell it what the outcomes (bought a product or not ) amazon will use machine learning to analyze the data set and predict outcomes for future decisions. This allows to predict data based on the previous performance.Rekognition -
This service will recognize an uploaded picture if it has a human being (facial recognition) and also identifies the objects in the picture (mountain bike)
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