I recently had a conversation with the CEO of one of my oldest software manufacturer clients. He's a veteran, having successfully weathered a number of industry changes over the years with his company, but he made a comment that concerned me. "We can go SaaS at any time," he said. "We've got the code already revised and in place, so it won't be a big deal if we decide to offer that model." Unfortunately, the reports of those who have undertaken the journey to SaaS show that it will be a big deal, and the shock will be the worse for the short-range view of the initial decision and what it will bring. For a traditional model product-centric software manufacturer, changing the code to go SaaS is only the beginning, and is the easiest part. The significant challenges will come from the ripple effects of that migration on every level of the company and its people.