One of the favorite strategies to promote the use of the platform is to focus on specific initiatives, measuring before and after, and if possible have the champion of the initiative give a lunch & learn to the user community; reporting first hand the positive impact the platform has had in her/his business. (e.g. a deli Vice-President decided to measure the sales of rotisserie chickens, she found that the stores were not making them as they did not know how many to produce at a particular time, after running a couple of reports on sales by hour she was able to put together some guidelines as to how many chickens and when to cook them. The results were amazing, sales went up by 5,000% in one week, the store associates were impressed by the knowledge the VP had shown about the business, and their specific store). The rotisserie chickens story became an urban legend within the company, inspiring, and energizing people to match the deli success in their department.
There is no more powerful way to measure results than in old, plain dollars, if possible try to quantify the benefits in hard dollars. This way everybody across the Enterprise understands the scale, and there will no doubt about the Return On Investment of the initiative.