The communication department for a company plans to add a publicly accessible survey page to the company's public website. You must add the new survey page to the company's public website and…

Azure AD Conditional Access is a policy engine for controlling access based on various conditions, not an authentication mechanism itself for application-level access without user credentials.

An Azure guest account still requires a specific user identity and explicit credentials, which contradicts the requirement for no explicit user credentials for writing data from a public page.

X.509 certificates can be used as a form of client credential within an OAuth 2.0 flow, but OAuth 2.0 is the overarching authentication mechanism that enables this scenario.

OAuth 2.0 provides an authorization framework where an application can obtain an access token to interact with protected resources like Dataverse. By using the client credentials flow (part of OAuth 2.0), the public website's backend application can authenticate itself with Azure AD to get a token and write data to Dataverse without an end-user signing in.