Marina, your interviewer, asks you questions out loud and follows up when it matters. When you finish, you get a report on what worked and what was missing.
Marina
What impact did the project you led have?
Your improved answer
I led the migration and cut incidents by 30%.
Marina followed up on the impact and you gave no numbers.
What was missing, in your own words: "I coordinated the project" doesn't say what you did.
Tip: prepare the result with numbers before your next interview.