The initial setup was pretty complex. The prep work alone took a few months. 

The initial setup and deployment were quick. I maintain this solution, and it's straightforward after some proper training.

Yes, it was involved, but not complicated.

The installation and initial setup are very straightforward. It can easily be done in one day and it's out of the box. Integration with other applications via SOAP (Simple Object Access Protocol) or API or Web Services is also very good. It is very easy to integrate with other applications and data sources.

The installation of upgrades is also very easy. It is just a matter of downloading an executable and launching it and you get an in-place upgrade (without removing the older version first).

A bit complex. Take into account that the software is very flexible and can adapt to your processes. The first step we did was to document our processes and then adapt the software to them.

The initial setup of this solution is not complex, but it requires two main servers.