Essay argues SaaS companies are evolving into 'harnesses' around AI models
A tech essay describes a trajectory where software companies increasingly wrap their operations around large language models, moving from engineers pairing with coding agents to entire teams triggering and reviewing background agents, and eventually to agents proactively deciding work themselves. The author terms this evolving structure a 'harness' — the infrastructure, interfaces, and state built around a stateless model — and suggests most SaaS businesses are already on this path, whether they recognize it or not.