Airbnb System Design interview questions often focus on designing scalable marketplace services where correctness, timeliness, and personalization all matter. What’s distinctive about Airbnb scenarios is the combination of large-scale search and ranking, geo-aware discovery, and strict correctness for bookings and payments; interviewers typically evaluate how you scope requirements, model time-based availability, choose consistency boundaries, and reason about trade-offs like caching versus freshness. Expect to walk through high-level architecture sketches, data models, API contracts, and failure modes while justifying design choices with traffic and latency estimates. For effective interview preparation, practice clarifying ambiguous requirements, drawing clean end-to-end flows, and quantifying capacity and storage needs. Emphasize how you’d handle calendar conflicts, idempotency for reservations, regional sharding, offline indexing for search, and observability/monitoring plans. Be ready to discuss operational runbooks, scaling strategies, and simple experiments to validate assumptions. Framing answers around user impact, measurable SLOs, and pragmatic trade-offs will help you stand out in Airbnb System Design interview questions.