In the rapidly evolving landscape of data management, the integration of real-time data and event-driven systems has become crucial across industries, with 97% of organizations globally utilizing streaming data technology, as highlighted in Confluent’s State of Data in Motion Report 2022. This shift necessitates robust data governance strategies to ensure data quality and compliance, moving away from restrictive measures to enabling broader access within organizations. Confluent has been at the forefront, developing Stream Governance on Confluent Cloud, the only fully managed governance suite for Apache Kafka® and data in motion, to facilitate the discovery, understanding, and trust of data streams. The journey of BT Group, a major UK telecoms company, in creating a 'Smart Event Mesh' illustrates how real-time data streams can be effectively governed across hybrid cloud environments. This transformation aligns with regulatory demands, such as those imposed by the Markets in Financial Instruments Directive II (MiFID II), which mandates transparency in European financial markets.