Azure TTS is a governance and coverage decision
Enterprises usually reach for Azure TTS not because it sounds the most human, but because it fits how they already ship software: regional data control, compliance posture, Speech SDK, and 100+ language coverage inside the Microsoft ecosystem. If procurement and governance drive the decision, Azure is the safer default. For TTS-only projects, measure first-byte latency, finish latency, region, and streaming behavior before committing.

