Explore the Portals Project, a groundbreaking approach to dataflow streaming systems with native serverless computing support, in this 40-minute conference talk from Scala Days. Discover how novel abstractions like Atomic Streams and Portals simplify communication between multiple dataflow streaming pipelines while ensuring end-to-end exactly-once processing. Learn how these innovations enable the creation of previously impossible applications in the dataflow streaming model, including microservices, iterative programming models, and streaming analytics. Gain insights into the Portals model through demonstrations, including a fault-tolerant actor model implementation. Get an overview of the open-source project and learn how to contribute to this exciting development in the Scala community.