The thesis · Apr 2, 2026

Buy the system.Bring your own UI.

The original thesis separates the durable foundation purchased with B2B SaaS—governed data, identity, permissions, domain logic, integrations, actions, and history—from the export, artifact, interface, or workflow a particular person or team needs today.

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The Future of B2B SaaS Is Buy the System, Bring Your Own UI on a dark blue and red gradient.
Original graphic published with Harry Hawk’s LinkedIn field note. It is preserved here separately from the site’s contextual films.

The central idea

“Teams need dependable systems as their foundation and flexible interfaces for their work.”

Why it matters to BYO-UI

The original thesis separates the durable foundation purchased with B2B SaaS—governed data, identity, permissions, domain logic, integrations, actions, and history—from the export, artifact, interface, or workflow a particular person or team needs today.

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