And it has a complete and documented API with bindings in everything and is supported by ansible. And it has a clear, well thought (IMHO) separation of concepts

And it has a complete and documented API with bindings in everything and is supported by ansible. And it has a clear, well thought (IMHO) separation of concepts. On the downsides many beginners find the UI a bit confusing (although I'm told it's better in 3 but we still have to upgrade) and some things are a bit complex to do (such as downtimes on triggers instead of the whole host).