eBay is one of largest e-commerce company in the world, providing C2C and B2C sales services via the Internet. ebay has more than 400 million users (160 million active) and more than 1 billions sales items on ebay site. We built advertising and experimentation platform for search network, like Google and Bing, based on Hadoop, Spark, Kafka, etc. In this session, we introduce our advertising and experimentation platform, how the experimentation platform supports A/B test and running different science models.