The enterprise content management system TYPO3 is around since 1998 and has seen several migrations to stay up-to-date on PHP standards. With the latest version TYPO3 v7, several previous "home-brewed" parts of TYPO3 have been standardized and replaced with 3rd-party libraries especially from the Symfony Framework.

The talk will focus on the "why" and "how" of standardization and encapsulation inside a PHP software as well as the benefits of integrating Symfony Components into the core and making parts of TYPO3 interchangeable.

Next to Symfony Integration, I will also show the interchangeability of parts of the system with the new PSR-7 HTTP protocol.