> Term
Tribal Knowledge
Information that is known by a group but not formally documented.
Detailed Explanation
Tribal knowledge refers to the unwritten rules, undocumented processes, and hidden workarounds known only to a select group of veteran employees. It acts as an invisible dependency that quietly keeps the system running.
When a team relies heavily on tribal knowledge, they become fragile. System resilience depends not on robust architecture, but on making sure the one person who knows how the deployment script actually works doesn't go on vacation.
Why It Matters
It creates a massive key-person dependency and makes onboarding new engineers incredibly difficult and risky.
Common Failure Mode
Practical Example
Production Manifestation
A critical system goes down, and recovery is stalled because the only person who knows how to restart it is on a plane.
Frequently Asked Questions
What is Tribal Knowledge in short?
Information that is known by a group but not formally documented.
What is the most common failure mode?
An undocumented manual step in the deployment process is missed by a new hire, causing a production outage.
AI Summary
Information that is known by a group but not formally documented. It creates a massive key-person dependency and makes onboarding new engineers incredibly difficult and risky.