Pixel Federation, a developer of popular mobile games, initially used Apache Kafka as their message bus for real-time data streaming infrastructure, leveraging AWS's managed Kafka offering, MSK. As their usage grew, so did the complexity and costs associated with managing this setup, including high costs due to scaling requirements and inter-VPC networking fees. After migrating to WarpStream, they implemented an Agent Groups architecture that uses a shared object storage bucket as both storage and networking layer, resulting in significant cost savings of over 6x compared to their previous MSK solution, while also offering additional benefits like seamless auto-scaling and no manual partition rebalancing. This migration allowed Pixel Federation to flex their cluster across multiple VPCs and AWS accounts with ease, making it a more efficient and cost-effective solution for their data infrastructure needs.