Method
You still have to draw. You also have to say who owns which box, what you ship first, and what you measure.
Cheatsheet
General system design from System Design School, plus engineering-manager questions. Jot this on paper. Use company language only if they put it on the board.
System Design School
Source: primer, study guide, NFRs, problems list.
Practice
Practice speech + drawing, not silent reading.
Memorize
Do not memorize textbooks or SDS’s full catalog. Memorize language, method, and a few facts you can defend.
Ready
You can, standing at a whiteboard with no notes:
Problems
7 items