How does system design for industrial recommendations and search look like? In this talk, Eugene Yan shares how its often split into: - Latency-constrained online vs. less-demanding offline environments, and - Fast but coarse candidate retrieval vs. slower but more precise ranking We'll also see examples of system design from companies such as Alibaba, Facebook, JD, DoorDash, LinkedIn, and maybe do a quick walk-through on how to implement a candidate retrieval MVP.