Final answer:
The statement is false; a service in private preview on Azure is not yet released to all customers, but instead is available to a select group for testing.
Step-by-step explanation:
The statement that An Azure service in private preview is released to all Azure customers is false. Generally, a service that is in private preview is not available to the general public. In the Azure cloud services lifecycle, there are different stages of availability – private preview, public preview, and general availability (GA). A private preview is typically limited to a selected group of customers for testing purposes and feedback. It's only after the service has gone through subsequent stages of testing and validation that it might be released to all Azure customers. When a service reaches GA, it is considered fully developed and supported, and only then is it made available to all Azure customers.