Your cobbled-together core business database application is beginning to show its age, and your company has decided that it's time for a replacement.
No, really: Your company is serious. You have a chance to start over and do it right.
Make no mistake, successfully implementing and productively running a new system is a complex and difficult job. That's just on the technical side. Tracking the money and politics of the project are also essential elements that must be mastered.