This document summarizes Haitao Wang's experience working on streaming platforms at Alibaba and Microsoft. It describes Alibaba's data infrastructure challenges in handling large volumes of streaming data. It introduces Alibaba Blink, a distribution of Apache Flink that was developed to meet Alibaba's scale needs. Blink has achieved unprecedented throughput of 472 million events per second with latency of 10s of milliseconds. The document outlines improvements made in Blink's runtime, declarative SQL support, and use cases at Alibaba including real-time A/B testing, search index building, and online machine learning.