WCM is not a new industry. As a result, many Web CMS tools have aging technical foundations under the covers...
Excerpt from the eZ Systems: eZ Enterprise evaluation:
"Starting with version 5.0, eZ introduced a whole new set of options for developers, by adding support for the Symfony PHP application framework and (by association) the Twig templating engine. In order to access any of the new APIs, you'll to rely on these technologies. Be aware however, that even though there are more developers familiar with Symfony and Twig (as opposed to eZ's former proprietary tools), there aren't many of them who had applied this knowledge in the eZ Publish Platform CMS environment, beyond eZ's own R&D and Professional Services teams...."(P. 697 in the Web Content Management Report. )
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