The text illustrates the use of Kafka Streams API, specifically its KTable and GlobalKTable abstractions, to enable real-time machine learning applications. The example focuses on predicting flight arrival times, utilizing a streaming approach that continuously updates models with new data, rather than the traditional batch processing method. By leveraging Kafka Streams API, the process involves consuming live flight data, joining it with pre-trained models stored in GlobalKTables, and generating predictions using logistic regression. The system updates models dynamically as more data becomes available, improving prediction accuracy from an initial 50% to between 80-90%. This approach demonstrates how Kafka's stream processing capabilities allow seamless model updates, eliminating the need for separate batch training and enabling integration into existing workflows. The implementation shows that elastic, scalable, and distributed applications can be developed without additional big data processing clusters, simplifying architecture and enhancing predictive capabilities in real-time environments.