Final answer:
Azure services in private preview are accessed through the standard Azure portal after receiving an invitation and agreeing to certain terms.
Step-by-step explanation:
Accessing Azure services in private preview usually requires a specific invitation or approval process. Once you have been granted access, you typically access these services through the standard Azure portal, where the previews are made available to your Azure account. It is important to note that not all users have access to these private previews, and being part of the private preview program often means you have agreed to specific terms that could include confidentiality and non-disclosure. Always ensure to follow the guidelines provided by Microsoft for private preview services.