An incident review focused on systems and processes rather than on any individual's mistake, the convention that produces durable lessons.
A blameless postmortem is a structured review held after an incident, written and discussed in a way that focuses on the system, the process, and the conditions that produced the outcome, not on which person made which mistake. The convention removes the political cost of admitting what actually went wrong, which dramatically increases the quality of the writeup and the durability of the resulting fixes.
Postmortems that name and shame produce defensive writeups, missing context, and shallow lessons. Blameless postmortems produce the opposite: deep root-cause analysis, specific action items with owners, and a knowledge artifact that prevents the same incident from recurring across teams.
See the part of the platform that handles blameless postmortem in production.