Ask HN: Good ways to capture institutional knowledge?

Ask HN: Good ways to capture institutional knowledge?
436 by alhirzel | 183 comments
Successful companies institutionalize the knowledge of their employees; this leads to better continuity and faster on-boarding. Things like huge monorepos of useful code, internal tools, process manuals, etc. are example products of this. Young companies tend to depend on the dedication and talent of key individuals, and in maturation, must somehow make the jump to institutionalized knowledge (so that "if someone got hit by a bus" things are ok). What are some successful methods you have used or seen used to accomplish this transition? What are problems you faced (skeptics, opponents, etc.)? I am involved with an organization that is slowly growing, is about to lose key personnel, and is looking to prepare.