Before we started working on TYPO3 v10 more than 1.5 years ago, we set two important goals:
We improved site setup and template handling to enhance the site-creation experience for TYPO3 integrators and agencies. With the “Site Management” backend module, integrators will make configurations for one or more websites at a central point in the TYPO3 system. Setting up these “sites” is now mandatory in v10 LTS and TYPO3 generates a basic configuration automatically. Now, integrators can set up a TYPO3 instance from scratch in seconds.
This is a companion discussion topic for the original entry at https://typo3.org/article/typo3-v10-lts-safe-and-sound