Amazon Lex provides features such as automatic speech recognition (ASR) and natural language understanding (NLU) to help build applications such as chatbots. Amazon Polly is a service that turns text into lifelike speech that enables you to build speech-enabled products. Amazon Rekognition is a service that allows you to add image analysis functionality in your applications. 

AWS services supports frameworks, such as TensorFlow and MXNet. Several organizations have started running their production applications with TensorFlow and Apache MXNet on AWS, and this trend is likely to continue to become a lot more popular.

Finally, from an infrastructure's perspective, Amazon EC2 P2 instances provide powerful Nvidia GPUs to significantly reduce the training time of your models. You can also use the Deep Learning CloudFormation templates to create P2 clusters using Amazon Deep Learning AMIs for your large-scale model training requirements.