There is a current trend for so-called 'headless' CMS systems. That is, provision of content deliberately divorced from a presentation layer such that other applications can easily consume the content. This usually means that the content is provided in a structured form such as XML or JSON, including the content itself and any associated metadata (lifecycle information, keywords etc.)
As for Obtree WCM, Red Dot WCM is capable of providing content in this way. It is straightforward to expose post-publication content as XML or JSON, by using the out-of-the-box template variant methodology.
Further, the underlying RQL interface potentially allows development of a programmatic bridge that exposes content as structured data in the editorial environment. This may be to simply expose the content, or to programmatically modify the data. This of course will depend on requirements.
We believe that this model can extend the life of your software , particularly if there has been many years of editorial investment in content creation.
If this is something you wish to explore further, please get in touch.