The author explains why they recommend using Liquid and FetchXML instead of the Power Pages Web API for querying Dataverse. They argue that Liquid and FetchXML offer better security because they are server-side languages, while the Web API is interacted with via JavaScript, allowing users to potentially craft and execute their own queries. Liquid and FetchXML also provide more control over data access, especially for anonymous users, and can prevent data leaks and vulnerabilities. The author acknowledges that using Liquid and FetchXML may require more work, but they believe it is worth it for the added security benefits.
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