Who handles speech-to-text (STT) when using the Nuance Recognizer as a Service integration in Genesys Cloud?

Nuance Recognizer as a Service (NRaaS) is a third-party, cloud-to-cloud integration. Genesys Cloud streams out audio in real time (along with the GRXML grammar file) to Nuance Recognizer for processing. NRaaS transforms the audio to text, and returns the results to Genesys Cloud.