Juniper Operating systems are well suited for distribution and edge networks. When we evaluated them for a proposal to core networks we decided to go with other vendors, as the processing capacity of core routers was lower. Typical environments Junos OS has fit in our organization are enterprise, customer edge, distribution networks.
I highly recommend it because it's the most used operating system in the world. If you work with other organizations or share info, it's easier if you have the same system instead of Linux, for example. Also, a large number of employees know how to use it, but not so many know how to use Linux or macOS.
An all-purpose operating system for business or personal users. Overall, the OS is very user-friendly and intuitive, enabling even new users to quickly utilize the system. The same can be said about the apps within Windows. There is also good cross-functionality between applications, although the ease of use could be improved.
We have stuck to iOS for datacenter networks for many years due to familiarity and ease of use. Junos OS is well suited for business customers, due to cost-effectiveness and not frequent changes to end routers. Junos OS is very comparable to its competitors, but it bit behind on core layer solutions.
We selected Microsoft Windows because of the user friendly nature of it and a big factor is that other user never used macOS or Ubuntu so the productivity will decrease a lot because you have to explain a whole new OS. I always only recommend macOS or Ubuntu if you are a graphic designer of a developer. But for the day to day office work Microsoft Windows is the way to go.