Knowledge
Knowledge, blueprints, insights & tricks
The most valuable knowledge in any organization is the kind that exists only in people's heads, and it leaves with them when they go.
Every organization accumulates knowledge that is not in any document: the workaround someone found for a recurring problem, the insight from a project that was never written up, the institutional understanding of why a customer relationship works the way it does. This is the knowledge that makes experienced people so effective, and it is the hardest to transfer.
Making this knowledge visible starts with identifying it. What do people ask the same expert for again and again? Which tasks grind to a halt when a specific person is unavailable? Those concentrations of knowledge are where the risk is highest and where documentation effort pays off most.
The goal is not to document everything. It is to capture enough that the organization can function without any single person being irreplaceable, and that new people can get up to speed without needing months of informal apprenticeship.