The tool in Evoq that I think Joe is referring to is the Content Staging module. I believe this was decommissioned a few years and is no longer being shipped. That being said, it only supported the HTML module out of the box and custom extensions had to be coded a specific way to use it properly. As well, it had a variety of bugs and issues with it especially on larger sites that could cause severe operational impacts in certain cases.
I built a custom extension for a specific client a few years ago to replace the Evoq functionality that was able to sync multiple environments together for content and config promotion, supporting almost all modules out of the box without coding. If this is something you want to investigate further, let me know and I can fill you in on our approach, etc.