How to identify risks when testing a large epic that involves many modules and functionalities in the system?

When testing a large epic that involves multiple modules, it is important to approach risk identification systematically:

1. Requirements and architecture analysis — understand which components and functionalities are affected, and what dependencies exist between them.
2. Identification of critical business processes — highlight key scenarios that the system's operation and user experience depend on.
3. Change assessment — determine which changes are most significant and could lead to regressions.
4. Defect history — study past bugs in the affected modules to identify vulnerable areas.
5. Team interaction — discuss potential problem zones with developers and analysts.
6. Risk prioritization — rank risks by likelihood and impact to focus testing.

This approach helps identify areas requiring special attention and optimize test scenarios for maximum coverage and minimal missed defects.