Amazon Polly
Developer Guide

Generating Speech from SSML Documents

You can use Amazon Polly to generate speech from either plain text or from documents marked up with Speech Synthesis Markup Language (SSML). With SSML tags, you can customize and control aspects of speech such as pronunciation, volume, and speech rate.

Amazon Polly supports SSML version 1.1, as defined by the following W3C recommendation:

You can use SSML within the Amazon Polly console or by using the AWS CLI. The following topics show you how you can use SSML to generate speech and control the output so that it precisely fits your needs.