Standard (Age/Gender/Location/etc) targeting for SmartNews Ads

Custom Audience redesign

Infrastructure cost reduction (Reduced ads infra cost by ~40% in 1 year)

Improve service quality and observability

Global service load balancing: Build system to make sure all critical micro-service's traffic is properly routed to/from each data center in a safe and low latency manner, and traffic can be safely shifted to nearby data centers when one data center has problem.

Facebook's common priority queue service (FOQS): Work on an extremely large scale and high-traffic low-latency priority queue system. The system is deployed in 13+ data centers around the world and handles 1 trillion jobs each day with P99 e2e latency of 7ms.

Facebook's Ad Campaign Planner to help brand advertisers plan ad campaigns more efficiently (See press http://www.adweek.com/digital/campaign-planner-business-manager/).

RPC, TCP.