It seems like all we talk about these days is Office 365, Adobe Creative Cloud, SaaS this, and subscription that. The software industry is moving towards subscription based licensing. I attended a great indie conference for software publishers years ago. Someone there did an interesting study that showed the vast majority of subscription-based models were designed with revenue streams in mind rather than customer satisfaction. He tied those findings to another study showing very low customer satisfaction with subscription-based models (surprise!). Things have greatly improved since then, but some of the truths of that old study remain. Subscription-based licensing is different, and it requires new thinking about the consumption of software and the management of a software estate.