Authorized biographies are often written by professional writers who are hired by the subject or their estate. They may also be written by close friends or family members who have the subject's trust.
Authorized biographies can be quite different from unauthorized biographies, which are written without the subject's consent. Unauthorized biographies are often more critical and may contain information that the subject would not want to be made public.
Some people believe that authorized biographies are more accurate and reliable than unauthorized biographies, while others believe that unauthorized biographies are more objective. Ultimately, the accuracy and reliability of a biography depends on the author's research and writing skills, rather than whether or not it is authorized.