Technical due diligence

Also called: tech due diligence, technical diligence, tech DD, code audit, technology due diligence

A review of a company's technology by an outside expert before an investment or an acquisition: how the product is built, its security, its technical debt and whether the team can keep building it.

For example: Before leading a round, an investor pays a fractional CTO to review the startup's code, hosting and security and report the risks.