Nuance DAX (Dragon Ambient eXperience) is Microsoft's enterprise AI ambient documentation solution, used in hundreds of health systems and hospitals. It listens to clinical encounters and automatically generates complete clinical notes that meet each provider's documentation preferences and specialty requirements. The Microsoft acquisition brought DAX into the Teams and Azure ecosystem, with integrations into major EHR platforms including Epic and Cerner. The specialty-specific templates and the ability to train on individual provider preferences distinguish it from generic dictation tools. As the market leader in ambient clinical documentation, DAX is the benchmark against which newer tools are measured. For health systems, the implementation comes with Microsoft's enterprise support infrastructure.