Hi Sammy,
The customers who have implemented Ariba Contract Management are reaping incremental benefits right from the same year of its roll out. Its a very robust/stable product and the template based contracting process standardization makes it very easy to guide relationships, help track compliance to a a great extent. Documents and Standard clauses are maintained and kept updated very easily. Approvals, hierarchy, amendments, terms etc are key offerings. Its a must have solution whether you have a centralized contracting process or not.
If there are specific question then please list them out.
Regards
Vilas