Ignition is a CD/DVD burning optimizer. It helps you saving space on your media by optimizing the way files are placed on the CDs/DVDs of your set.
 
For example if your backup fits on 3-4 CDs, a manual files organazation might lead on a 4th with only 10 Mb of data when a better organization would have only required 3 CDs. Thanks to Ignition, you'll save medias, time and money.