The campaign name, was of course a play on words based on water's chemical formula H2O. The purpose was to get costumers at restaurants to say no to H20. The program taught waiters how to use 'suggestive selling techniques' to offer a myriad of alternatives to tap water.
Eventually a story broke about how successful the program was at Olive Garden. Coca-Cola took the story down, although they couldn't keep the program out of the public eye when The New York Times published their own story on the program.
Coca-Cola approached Olive Garden because the restaurant chain had complained about how many people were ordering water. Coke came up with the program, which included training for waiters and even incentive programs for people who managed to upsell drinks. They increased their check average and their profits based on this program.