Voice of the Customer for Dynamics 365 uses Azure and Azure Storage when customer surveys are published. Responses from customers are temporarily stored in Azure Service Bus, then retrieved and stored in Dynamics 365 and deleted from Azure.
Recommendations and Limitations
|Maximum questions on a survey||250|
|Maximum pages per survey||25|
|Maximum sections per page||10|
|Maximum email invitations include piped data (24 hours):||50,000|
For more information, visit https://docs.microsoft.com/en-us/dynamics365/customer-engagement/voice-of-customer/get-feedback-surveys.