In reply to Rudy.

I get more into this in the next blog, but YANG _is_ an XML schema. Any type of organization helps, but the standardization that YANG brings is particularly helpful (even though different vendors use different YANG models). The main point is that your network is the manifestation of configuration data. Organizing and maintaining this data, in whatever way is most conducive to your situation, is the first step to a successful automation strategy.