CapitalOne being Tech Company in Banking business, we are 100% Cloud operated Company with Data DNA. All our workloads are Cloud Native. CapitalOne Loyalty is one of such cloud native application processing billions of credit card transactions yearly and delighting our customers with rewards. This talk will be see thro' lens into our data processing pipeline and how Apache Parquet plays a pivot role in each step of our processing. We have various design patterns implemented using Parquet and Spark and this talk will touch upon those as well and how our resiliency has increased with usage of Apache Parquet. There are multiple credit card processing streams and how Parquet helps in our choreography and replaying them will also be covered in this talk. Parquet is deeply intertwined in our pipeline and this talk will highlight on how it is connected and used in our pipeline. Overall audience will take away some interesting real world usage of Parquet in Spark data processing pipeline.