I've evaluated the IBM tool, apart from Adobe Experience Manager, and it's a fine tool, but Adobe Experience Manager has more features.

I never purchased it but yes, it's very expensive, so companies have to think about how to justify the cost and have to look at alternatives.

I have worked with other similar solutions that solve parts of the complete set of solutions AEM provides, but none of them have the ability to handle so many of those areas in an integral way.

For Web Site and Content Management in general, sample tools are Drupal,
Joomla, and Wordpress.

No.