We previously used Ansible to automate machines. 

We used a couple of different solutions for cloud management previously. 

We also use VMware. VMware is very user-friendly and the integration is seamless. Red Hat has good integration with various other components and products as well. The complexity is also higher than VMware's.

We did not previously use a different solution.

I also use VMware. Each has it's own pluses and minuses, although I do find that VMware is easier to configure and integrate with other solutions.

We also use VMware. CloudForms is more open. In VMware, everything has to go back to VMware services, which is a pain point. 

There are also a lot of open resources available for CloudForms. If you have just one guy dedicated to it, it becomes much easier as compared to what we have to do with VMware. VMware is very closed, and that's the reason why our clients chose Red Hat over VMware.