The ease of use and ability to create multiple configurations as needed by my organization. We have been able to automate our address management process using this product. It has made it easier to manage addresses because I can easily find all changes rather than having to search through hundreds or thousands of emails from other systems. Nothing really! This software does exactly what we need it to do. If your looking for a easy way to update contacts information and keep track of those updates then look no further. There are many things that could be improved but they were not very concerned about how much time it would take to develop them.