Amazon Connect allows contact-centers to auto-resolve to the best voice
You can now configure your Amazon Connect contact-center to automatically resolve to the best sounding version of a Polly Text-to-Speech (TTS) voice. Instead of manually updating the settings within every ‘Set voice’ block, administrators can configure their contact-center once and every TTS prompt would auto-resolve to the best available voice, saving time and effort. For example, businesses could have their contact-centers resolve to Joanna conversational without updating a single flow. To get started, select the best available voice toggle from within the Amazon Connect console.
Source:: Amazon AWS