How would you answer an interview scenario involving interface adapters?

For an interview scenario involving interface adapters, I would first clarify the business goal, scale, constraints, and the failure or quality attribute the interviewer wants to explore. Interface adapters translate between external representations and internal application or domain models. For production, map at boundaries, validate external input early, keep mappings explicit, and avoid unnecessary duplicate models when no boundary exists. I would then explain the main alternatives and tradeoffs, identify likely failure modes, and describe how I would validate the solution through testing, observability, security controls, and recovery or rollback planning.