Is comprehensive one of those words like epic that are always overused?  It seems that lots of companies have the most comprehensive tag management solution on the market that can deliver any market tracking tag.  When it comes down to the crunch, however, a lot of solutions have real problems incorporating some tracking solutions such as Google Analytics.

TagMan can claim to be fully comprehensive because it can deploy other piggy-back solutions, whereas you can’t use them to deploy TagMan!

Mix this with the fact it can deploy javascript based tag solutions, de-dupe based on post impression click or view activity and set conditional first/last click rules for completed actions and comprehensive is very much the word.