Amazon Comprehend is a natural language processing (NLP) service that uses machine learning
to find insights and relationships in text. The service identifies the language of the text;
extracts key phrases, places, people, brands, or events; understands how positive or
negative the text is; analyzes text using tokenization and parts of speech; and
automatically organizes a collection of text files by topic
Amazon Transcribe is an automatic speech recognition (ASR) service that makes it easy for
developers to add speech-to-text capability to their applications
Amazon Rekognition makes it easy to add image and video analysis to your applications
Amazon SageMaker is a fully-managed platform that enables developers and data scientists to
quickly and easily build, train, and deploy machine learning models at any scale