One of my favorite quotes: "As an evolving program is continually changed, its complexity, reflecting deteriorating structure, increases unless work is done to

One of my favorite quotes: "As an evolving program is continually changed, its complexity, reflecting deteriorating structure, increases unless work is done to maintain or reduce it." - Lehman. The same is true with those old applications and services. They may have been running fine for years, but they are eventually going to have to be worked on. The longer they wait, even though they are currently static, the more problematic they are going to be. They are going to break when something underneath them changes - and change is pretty inevitable. It's not just that they are going to break, the undocumented things built atop them are going to break. I suspect I'm preaching to the choir, however.