Kai Waehner GmbH published an analysis on Diskless Kafka, a diskless Kafka innovation that writes event data into object storage like S3 instead of replicated broker disks.

Kai Waehner GmbH is the advisory practice of Independent Advisory Field CTO Kai Waehner, based in Munich, Germany. I work with enterprises and system integrators on architecture strategy, vendor selection, and technology adoption. With a small number of selected technology vendors, I focus on product strategy, positioning, and thought leadership, never selling a product. Independence lets me cover the full landscape without a single provider's lens. The recommendation follows the use case, not a logo. Four focus areas, applied across more than a dozen industries from financial services and manufacturing to telecom, retail, and the public sector: ▪ Enterprise Architecture: how the pieces fit together, scale, and stay maintainable. ▪ Data Integration: data streaming, message queues (MQ), iPaaS, legacy ESB modernization, API management, real-time integration. ▪ Process Intelligence: process mining, orchestration, and the bridge into agentic automation. ▪ Agentic AI: roadmap, architecture, and the realistic path to trusted production, including compliance and sovereignty trade-offs across US, European, and Chinese model providers. Author, keynote speaker, and content creator. Vendor-neutral landscape reports published regularly, and a book on modern data architecture in progress. Available for advisory engagements, keynotes, and media collaborations: https://www.kai-waehner.de