Communicate: understand thoroughly, so ask questions.
Go Broad First
Use the white board
If interviewer gives suggestions then cosider them
State your assumptions explicitly
Estimate infrastructure needed
Stay in the driver's seat



Project Scope Design Analysis and Assumptions:
Draw diagram of bigger components
Do iterative design cycles around key issues (bottlenecks, major challenges, future expansions, internet traffic on special occasions)
Whiteboard the design again with changes


Design \tools to be used in development;
Break project into self contained microservices
Design scalable algorithm to save/search/retrieve data.
Think about data volume and velocity and number of users

Scaling;

Horizontal vs Vertical scaling
Load balancer