DeltaStream is a unified serverless stream processing platform founded by Hojjat Jafarpour, designed to simplify and enhance the management, security, and processing of event streams using Apache Flink. Built to address the complexities and high costs of existing stream processing solutions, DeltaStream aims to offer an easy-to-use, automatically scaling, and comprehensive platform that works across multiple data streaming stores like Apache Kafka and Kinesis. The platform supports both stateless and stateful stream processing and includes features such as zero operations setup, multi-tenancy with query isolation, and robust security measures through access control and namespacing. DeltaStream is positioned to help businesses quickly gain insights from real-time data while reducing the engineering burden of managing infrastructure, with future expansions planned to further enhance its capabilities.