Where this came from
This process did not exist under this name before the Eighth Edition. It merges what were previously separate processes:
Perform Risk Analysis is where identified risks get assessed: how likely each one is, how much it would matter, and what they add up to across the project as a whole.
Two processes became one
The previous set split this work in two: Perform Qualitative Risk Analysis and Perform Quantitative Risk Analysis. The eighth edition merges them into a single iterative process.
The reason is that the split never described a sequence teams actually followed. Qualitative assessment runs continuously through a project. Quantitative analysis, the guide says plainly, may not be required at all depending on the project — and where it is required, it also runs throughout rather than as a stage that follows the qualitative one.
What that means in practice
The qualitative/quantitative distinction has not been abolished. It has been demoted from a process boundary to a choice of technique within one process, and both sets of techniques now sit under a single tools column.
For anyone who learned the previous set, this is the item most likely to trip you up, because the old structure was load-bearing. A question stem that established you were in qualitative analysis thereby told you which inputs and outputs were in play. That scaffolding is gone. The question is now which technique the situation warrants, not which of two processes you are standing in.
Outputs
The merged process lists one output: project document updates. Each of the two predecessor processes also produced a single output, so this is a genuine consolidation rather than an artifact of how the lists are counted.
ITTO at a glance
All three lists are formally open-ended — every ITTO column in the eighth edition ends in “Etc.”, so none of them is a closed set to be memorized. PMBOK® Guide — Eighth Edition, §2.7.2.3. What changed in the ITTOs, across all 40 processes.