The pay-by-use nature of cloud-computing makes tracking revenues difficult. If a customer commits to using IBM's cloud for a year, how much revenue can the company book for that? What if customers use more or less resources than they initially envisioned? Tzou has created a billing and financial software package that helps companies report these revenue models. He says companies born purely in the cloud have had to figure this out on their own. Everyone else is adjusting to this new world.
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