That system may not be technical, but procedural. It will include other business functions. It may include your customers. In any system, there is a clear "start" and "end" that encompasses a complete process and reason for being.
You'll find that in most organizations, people stay in their little corner, do their little thing, not caring much about what happens to the left and right of them. That leads to inefficiencies and missed opportunities.
If you understand the larger system, you'll be able to see opportunities others are blind to. Point a couple out and -if you're both respectful and right - it won't take folks long to think "man, this guy really gets it!"