The document discusses Amazon Web Services' (AWS) machine learning and artificial intelligence services that were announced or highlighted at the 2018 re:Invent conference. It provides an overview of 1) AI services like Amazon Personalize and Amazon Forecast, 2) machine learning frameworks and infrastructure like Amazon SageMaker, Elastic Inference, and EC2 instances, and 3) machine learning services like Amazon Rekognition and Amazon Comprehend. It also summarizes new services announced at re:Invent like Amazon SageMaker Ground Truth, AWS Marketplace for ML/AI, and Amazon SageMaker Neo.