(Benny Lee + Christopher Arthur, Bank of Australia) Kafka Summit SF 2018 Commonwealth Bank of Australia (CBA) is Australia’s largest bank with over 15m customers, 50,000 employees and over USD700 billion in assets. We started the journey two years ago to transform our existing enterprise architecture into an “event driven” architecture. Since then, Kafka has become a mission critical platform in the Bank and it is the core component in our “event driven” architecture strategy. In this talk, we will walk you through the journey of how we stood up the initial Kafka clusters, the challenges we encountered (both technical and organisational) and how we overcame those challenges. We will also deep dive into one of the use cases for Kafka (with Kafka Streams and Connectors) in our new real time payment system that was introduced in Australia early this year. We will discuss why we think Kafka was the perfect solution for this use case, and the lessons learned. Key Takeaways: -Lessons learned from our experiences (that we think other companies could be able to benefit from) -Our use cases for Kafka with a particular focus on the new real time payment systems (NPP) initiative in Australia