Every SaaS Business Will Become a Harness Around a Model
The Harness Is the Company
The author argues that all SaaS companies will eventually become harnesses around stateless LLMs, progressing from engineers pairing with agents to proactive background agents that orchestrate humans. The company's domain knowledge, tooling, permissions, and review loops become the business harness, and differentiation shifts to how well a company builds that harness rather than the software itself.
Following this trajectory, you've actually turned your company into a harness. The work to produce the software service has moved from people to the harness.