The well-known “TYPO3 Admin Panel” provides a deeper insight into the internal processes of TYPO3 at run-time. Once activated, TYPO3 integrators and site administrators can access performance and cache statistics, settings of a specific page, etc. They can also simulate certain frontend access situations. It is for example possible to impersonate a specific user group or simulate a timestamp, which may have an impact what is shown in the frontend.
This is a companion discussion topic for the original entry at https://new.typo3.org/article/typo3-v920-released-off-to-go-site-seeing/