Umbraco 7.x vs Drupal 8.x

Currently, Im in the evaluation process between MVC CMS , I like the clean way in coding of the UMBRACO 7.0.x , with the many W3C standard which implemented there.

Recently , I found that Drupal has new release 8.0 , which has new architecture supporting MVC.

As I'm totally new to Drupal world , I would appreciate any feedback about Drupal 8.x Release From different views such as :

The learning curve and first setup and configuration..
agility & Customization
extensibility with plugins
performance & scalability
security
Community support

Any extra view points would be also appreciated...

Solution

I'm not guru of Umbraco. But I can say a lot about Drupal 8.x which I use for the last 8 years now.

First of all here is an overview of the new 8.x capabilities which are really amazing and move Drupal to the new age.

On individual topics now here are some helpful links.

The learning curve. It may be longer than usual but it deserves the time. See https://www.acquia.com/blog/conquering-the-drupal-learning-curve/25/06/2015/3285296
First setup and configuration. Easy enough for a developer. Give it a try here: https://simplytest.me/project/drupal/8.2.3.
Agility & Customization: By far the best fieldable and fully customized framework. You can create fields for displays, add user permissions, show results from the db and many more and all these through a UI.
Extensibility with plugins: https://www.drupal.org/8/platform (3rd party libraries), https://www.drupal.org/8/standards, https://www.drupal.org/project/project_module and an issue queue for each contrib module (eg https://www.drupal.org/project/issues/pathauto?status=All).
Performance & scalability: http://buytaert.net/making-drupal-8-fly
Security: https://www.drupal.org/security and https://www.drupal.org/security-team. By far the most secure open source framework.
Community support. https://www.drupal.org/community (By far the most promising and helpful software community on the web.)

Don't forget to check the licenses (not only for core but also for plugins), the OS supported and some additional resources such as: