For most of the last decade, the conventional wisdom in software was simple: use the best tool for every job. The CRM that wins on contact management. The CMS that wins on editor experience. The analytics platform that wins on dashboards. The best-of-breed stack, stitched together by integrations and held together by the humans navigating between them. That era is over. I don't think this is coming. I think it has already happened. And I don't think most SaaS companies understand the implications yet. The Unbundling Era Made Sense When Humans Were the Coordinators The logic behind best-of-breed stacks was always human logic. A skilled operator could hold context across a dozen tools. A marketing manager could pull data from one platform, paste it into another, run a report from a third, and synthesize the whole picture in her head. The friction of context-switching was manageable because humans are actually pretty good at it. We pattern-match across interfaces. We tolerate inconsistency.…