Knowledge held by one person.
WHAT THE RISK IS
One person understanding something essential.
WHY IT MATTERS
Their absence, planned or otherwise, stops work.
WHAT TO IDENTIFY
Systems only one person can operate Credentials only one person holds Processes only one person knows
WHAT TO DO
Document Pair, so a second person learns Rotate responsibilities Ensure a second administrator on every account
WHAT TO TEST
Whether someone else can actually do it.
HOW
Have them do it, on a normal day, while the expert is available but silent.
WHY THAT WAY
Discovering the gap during an emergency is the expensive way.
WHAT TO AVOID
Building systems only their author understands Rewarding heroics rather than documentation
THAT LAST POINT
An organisation that celebrates the person who saves the day creates an incentive against prevention.
WHAT TO PRIORITISE
Anything where the person's absence would stop the business.
WHAT TO REVIEW
The list, when anyone joins or leaves.
