Part 2 of the DDS in Action Presentation. Introduced in 2004, the Data Distribution Service (DDS) has been steadily growing in popularity and adoption. Today, DDS is at the heart of a large number of mission and business critical systems, such as, Air Traffic Control and Management, Train Control Systems, Energy Production Systems, Medical Devices, Autonomous Vehicles, and Smart Cities. Considering the technological trends towards data-centricity and the rate of adoption, tomorrow, DDS will be at the heart of an incredible number of Industrial IoT (IIoT) systems. To help you become an expert in DDS and exploit your skills in the growing DDS market, we have designed the DDS in Action presentation series. This series is a learning journey through which you will (1) discover the essence of DDS, (2) understand how to effectively exploit DDS to architect and program distributed applications that perform and scale, (3) learn the key DDS programming idioms and architectural patterns, (4) understand how to characterize DDS performance and configure for optimal latency/throughput, (5) grow your system to Internet scale, and (6) secure you DDS system.