Technical due diligence is an assessment of the technology, the operations, the product and the cyber security (network and information security) of a company being bought, invested in or merged with. It runs alongside the legal and financial work, on the same transaction timeline, and it answers a different question: not what the business is worth on paper, but whether it can actually do what the thesis assumes.
The principals run it directly. The questions asked, and the ones the team knows to ask next, come from people who have held the COO, CTO, engineering and security roles being evaluated, rather than from a framework applied from outside.
Every engagement is confidential from the first conversation, and the deliverable is an independent third-party document. The firm is not positioning for the integration work when it writes it.