What do you like best?
It is focused on repeatable deployment. You can put it on the top of a blank operating system and build your whole platform with it. It is not limited on python, you can easily deploy other languages and configure complex softwares. As it makes repeatable deployment, it is perfect for continuous integration and testing.
It also be able to prepare offline release for systems on isolated networks.
What do you dislike?
Poor documentation based on python doctest. Some features are not explained or are hide in the code. The learning curve quickly reach a ceiling if you're not able to RTSL.
What business problems are you solving with the product? What benefits have you realized?
It makes fast and reliable deployment on projects that need reactivity. You can easily push 10 versions a day on offline sytems. You can also detect regression before making release.
Migration to the next major release was also painless.