Clause 5 governs every item and element developed to the standard, with exceptions for off-the-shelf elements that were not made to order against specific safety requirements: a hardware element qualified through established quality procedures (such as AEC qualification) and evaluated under clause 13, a software component qualified under clause 12, or an element built as an SEooC (operating systems, communication stacks and libraries being typical, with their assumptions checked per part 2 6.4.5.7). The customer and supplier rules hold at every tier of the supply chain, sub-contracts included, and an internal supplier may be handled like an external one.
This control maps to 1 controls across 1 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.
Every mapping shown was judged rather than inferred from wording similarity, and the ones that failed review are published too. See the coverage reports and what was rejected.
The graph holds this control, the 1 it maps to, and the evidence behind each claim, over MCP and REST.