ZN has helped us to solve many problems, such as high availability of data centers with geographically dispersed locations (EU).The speed in which we can deploy new servers is amazing! The support team always helps even if you don't pay them anything at all! So far I haven't seen any real disadvantage using zero north so it's not that bad either - maybe they should add some more features but considering their popularity this will be sorted out pretty quickly by then anyway :PAs mentioned above, HA deployment across multiple geographies was one huge problem solved here thanks to zen! I like that it is flexible enough to be able use whatever hardware you need, as well having many options in terms of software (such as NGEN). The support has been top notch too! Nothing really - just work with them until they get there sofware set up right when you release your application/infrastructure out into production! Their customer service team are great at solving issues quickly without any hassle or delays.