Fact · Voice privacy and security
Microsoft says that if endpoint logging is disabled and no customizations are used, no customer data is stored by the Speech service.
Checked against its source on October 17, 2026
In the source's own words
“if endpoint logging is disabled and no customizations are used, then no customer data is stored”
Speech service encryption of data at rest, Microsoft, Microsoft Learn, 2026, Custom speech and custom voice, Important note.
Open the original- What it measures
- Microsoft's statement sits in the same note as its position on model training. Endpoint logging and customizations, such as custom speech models, are the two settings that can cause data to be kept.
- What it does not show
- The condition has two parts. If you turn on endpoint logging or use custom speech, the statement does not apply, and the page does not say how long logged data is kept.