Amazon Web Services (AWS) ‚Polly‘ – Speech Marks are metadata which allows developers to synchronize speech with visual experiences. This feature enables scenarios like lip-syncing by synchronizing speech with facial animations or using the highlighting of written words as they are spoken. The speech marks metadata describes the synthesized speech, and by using it alongside the speech audio stream can determine the beginning and ending of sounds, words, sentences, and SSML tags. With the new Speech Marks, developers can now create lip-syncing avatars, visually highlighted read-along experiences, and integrate speech capabilities into the gaming engines like Amazon Lumberyard to give a voice to the characters