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Bridging the Valley of Death

How Assurance Takes Us from Proof of Concept to Minimum Viable Product

By Liz James

04 November 2025

Between proof of concept (PoC) and minimum viable product (MVP) lies the infamous Valley of Death, where promising innovations falter before reaching the market. While technical maturity is often cited as the barrier, the real gap is just as much about assurance as engineering. Customers, regulators, investors, and the public all demand confidence that a product is safe, secure, reliable, and responsibly managed.

This blog explores assurance cases as a structured way of bridging that gap. By framing claims, arguments, and evidence, we can move beyond tacit assurance and activity-based requests (“just do a pentest”) toward explicit, defensible cases.