Which AWS service provides a highly accurate and easy-to-use enterprise search service that is powered by machine learning (ML)?

Explanations:

Amazon Kendra is a managed search service that uses machine learning to provide highly accurate and relevant search results across various data sources, making it ideal for enterprise search applications.

Amazon SageMaker is a service for building, training, and deploying machine learning models, not specifically focused on search functionality.

Amazon Augmented AI (Amazon A2I) is used to facilitate human review of ML predictions but does not provide search capabilities.

Amazon Polly is a text-to-speech service that converts text into lifelike speech and is not related to search services.