Publications

Articles, blog posts, and podcasts published apart from my website.

2026

• Data Protection DE (German): Data Protection in Real Time: How Data Streaming Protects Customers in an AI Driven World
• Autocad Magazine (German): Data Streaming – The Real-Time Backbone for Digital Twins
• SMBTech: In Real-Time Or Be Left Behind: How Data Streaming Is Redefining Retail

2025

• IT Daily: How AI and Data Streaming Detect and Defend Against Threats
• SMBTech: In Real-Time Or Be Left Behind: How Data Streaming Is Redefining Retail
• The Fast Mode: Why APAC Telcos’ Agentic AI Success Hinges Entirely on Real-Time Data
• CreateQ: Why Streaming Data Powers the AI Era (Video Podcast)
• Security Insider (German): Real-time Cybersecurity – Detect Threats with AI and Data Streaming
• Cloud Computing Insider (German): Headless Data Architecture for Modern Data Management
• The New Stack: Real-Time AI Apps: Using Apache Flink for Model Inference

2024

• CiOL – Strengthening Presence: Confluent’s Strategic Approach to the Indian Market
• Dataquest – Insights on Future of Streaming Analytics and Data Management
• Analytics India Magazine – Confluent’s Al-Powered Data Streaming to Drive India’s Real-Time Analytics (Interview)
• Java Magazin (German):  Kafka and Flink – A Match Made in Heaven
• Java Spektrum (German): Deployment Options for Data Streaming – From Edge to Global Disaster Recovery
• ecommerce magazine (German) – Data Streaming – Benefits for the Retail Industry

2023

• Podcast: Hubert’s Streaming: Trends for Event Streaming in 2024 and Kafka for GenAI
• brutkasten (German): GenAI in Real-Time – New business opportunities by integrating LLMs and Data Streaming
• Industry of Things (German): Closed-Loop Manufacturing with Data Streaming
• Podcast: Tales at Scale – Kafka, Druid and Flink: The Future of Streaming Data
• ComputerWeekly: Open APIs versus Low Code/No Code Tools
• Produktion (German Print): Data Streaming for Shop Floor Data
• The New Stack: Stream Data Across Multiple Regions and Clouds with Kafka
• Open Data Science: Streaming Machine Learning without a Data Lake
• Podcast: AILINAUTEN – The Role of Field CTO + Kafka and Message Streaming
• Podcast: Modern Data Show – A Deep Div into the World of Data Streaming
• heise online: Data streaming and mainframe – Old hardware architecture meets modern software
• GI – Financial Services Site (German): Ten steps to success in the digital financial world

2022

• Big Data Insider (German): Legacy Modernization with Data Streaming
• Podcast: A Day in the Life of a Field CTO at Confluent
• Confluent Blog: Real-Time Gaming Infrastructure for Millions of Users with Apache Kafka, ksqlDB, and WebSockets
• Code Culture (Podcast, German): The current state of data streaming in 2022
• Digital World Magazine (German): Stream me to the moon – or at least to the cloud
• IoT Use Case Podcast (German): Why Apache Kafka and what use cases in Industrial IoT?
• IT-Zoom (German): Centralized data management is out – Data Mesh is the next generation
• Finance Derivative: The need for blockchain to be interoperable and why it matters
• Coding over Cocktails (Podcast): JMS vs. Kafka: Technology Smackdown with Clement Escoffier and Kai Waehner
• New Kids on the Bloq (Podcast): Guys, whats the deaaaal with these Blockchains? And whats the relation to data lake and event streaming technologies?
• Digital Manufacturing Magazine (German): How to improve the OEE (Overall Equipment Effectiveness) with data streaming
• Big Data Insider (German): Four cutting edge use cases for data streaming
• Big Data Insider (German): Deutsche Post DHL sets (data) packages in motion with Apache Kafka
• Netzpalaver (German): 4 Top Use Cases for Data Streaming in 2022 with Apache Kafka

2021

• ObjektSPEKTRUM (German magazine): Cloud-native Middleware – Kafka vs. MQ, ETL, ESB
• IT-Daily (German): Data Streaming in Hybrid Cloud Environments
• it-novum (German): How to Build a Smart City with IoT and Event Streaming
• IT & OT Production (German): Event Streaming as Foundation for Monitoring and Control in Plants
• Admin Magazine: Event Streaming with Kafka from Operations Perspective
• Hivecell: Kafka & Confluent at the Edge: Interview with Kai Waehner
• Confluent Blog: Apache Kafka and SAP Integration with the Kafka Connect ODP Source Connector

2020

• Beyond Buildings IoT Podcast: From a Proprietary Past to an Open Future
• Confluent Blog: Use Cases and Architectures for HTTP and REST APIs with Apache Kafka
• Linux Magazin 12/20 (German): Introduction to Apache Kafka for Event Streaming
• The Timelords Podcast (focus: Industrial IoT): Exploring the Value of Kafka for IIoT
• Confluent Blog: Kafka-Native MQTT at Scale with Confluent Cloud and Waterstream
• Industrial IoT Podcast: Event streaming architectures enabling IoT applications beyond messaging
• Insider Research Podcast (German): Event Streaming – A nervous system for data, an interview with Kai Wähner of Confluent
• Confluent Podcast: IoT Integration and Real-Time Data Correlation with Kafka Connect and Kafka Streams ft. Kai Waehner
• Confluent Blog: Streaming Machine Learning with Apache Kafka, Confluent Tiered Storage and TensorFlow IO – No Need for yet another Data Lake
• Confluent Whitepaper: Apache Kafka in the Automotive Industry

2019

• Google Blog: Enabling connected transformation with Apache Kafka and TensorFlow on Google Cloud Platform
• Confluent Podcast: Machine Learning with Kafka Streams, Kafka Connect and ksqlDB
• Confluent Blog: Machine Learning and Real Time Analytics in Kafka Applications (Model Server vs. Embedded Model)
  
• ObjektSpektrum (German) – Real Time Analytics at an Insurtech
• Confluent Blog: Internet of Things (IoT) and Event Streaming at Scale with Apache Kafka and MQTT
  
• Confluent Blog: Real-Time Analysis and Monitoring Dashboards with Apache Kafka and Rockset
  
• Confluent Blog: Microservices, Apache Kafka and Domain-Driven Design (DDD)
• InfoQ – Event Streams and Workflow Engines – Kafka and Zeebe
• Confluent Blog – Machine Learning with Python, Jupyter, KSQL and TensorFlow
  
• JavaMagazin (German) – Apache Kafka and Machine Learning – A Perfect Combination?

2018

• Confluent Blog – Using Apache Kafka to Drive Cutting-Edge Machine Learning
  
• Codemotion Magazine – Interview about Apache Kafka, Confluent, KSQL and Machine Learning
  
• Informatik Aktuell (German) – Apache Kafka vs. ETL and ESB Tools
  
• Confluent Blog – Apache Kafka vs. Enterprise Service Bus (ESB) – Friends, Enemies or Frenemies?
• DZone Javalobby – Model Serving: Stream Processing vs. RPC with Java, gRPC, Kafka Streams and TensorFlow
  
• Informatik Aktuell (German) – Apache Kafka und die DSGVO (= GDPR): Wie vergisst ein Logfile?
  
• Big Data Insider (German) – How Apache Kafka helps in Machine Learning Projects
  
• Confluent Blog – How to Write a User Defined Function (UDF) for KSQL
  
• DZone Javalobby – 5 Machine Learning Trends for 2018 Combined with Apache Kafka Ecosystem
• Confluent Blog – How to Build a User Defined Function (UDF) for KSQL
• Confluent Blog – Apache Mesos, Apache Kafka and Kafka Streams for Highly Scalable Microservices

2017

•  Confluent Blog – How to Build and Deploy Scalable Machine Learning in Production with Apache Kafka
  
•  Voxxed (Youtube Interview done at Devoxx Casablanca) – The Future of Big Data and Internet of Things 
  
•  Kai’s Blog – Why I Move (Back) to Open Source for Messaging, Integration and Stream Processing
  
•  Informatik Aktuell – GERMAN – Blockchain 3.0 – Smart Contracts and Middleware to Build Revolutionary Applications
  
•  JavaSPEKTRUM – GERMAN – The Container Wars Just Begun
•  DZone – Agile Cloud-to-Cloud Integration with iPaaS, API Management and Blockchain (Hyperledger Fabric)
  
•  Data Science Central – Open Source Deep Learning Frameworks and Visual Analytics
  
•  Voxxed – IoT Trends – Open Source Project Engines for Edge Processing
  
•  InfoQ – Data Preparation Alternatives for Machine Learning / Deep Learning Projects
•  DZone Integration Guide – The Cloud: Native Development and Deployment – Cloud-Native Middleware Microservices
  
•  Blockchainers – Blockchain + Streaming Analytics = Smart Distributed Applications
  
•  Voxxed – Cloud-native Middleware Microservices with Netflix’ Hystrix Circuit Breaker and Eureka / Consul for Service Discovery

2016

•   InfoQ – Blockchain – The Next Big Thing for Middleware
•   InfoQ – Container Wars – The Future of Docker, rkt, PaaS, Mesos, CaaS, etc.
  
•   DZone Integration Guide – A Survey of Modern Integration Architectures
  
•   ObjektSPEKTRUM (2016/06) – GERMAN – The Need for a Hybrid Integration Architecture
•   RTInsights – Avoiding the Anti-Pattern in Analytics: Three Keys for Machine Learning Success
•   RTInsights – Using Visual Analytics to Make Better Data-driven Decisions – The Death Pill Example
  
•   Voxxed – The Need for a Hybrid Integration Architecture
  
•   Technology Transformation Network – How to get from Microservices and Docker to Cloud-Native Middleware (Video Interview)
  
•   Voxxed – Microservices, Containers and a Cloud-Native Architecture in the Middleware World
•   RTInsights – How to Apply Machine Learning to Real Time Event Processing
•   ObjektSPEKTRUM (2016/02) – GERMAN – Real World Use Cases for Stream Processing in a Big Data / Hadoop World
  
•   ObjektSPEKTRUM (2016/01) – GERMAN – Frameworks and Products for Stream Processing and Streaming Analytics
•   TIBCO Blog – How TIBCO Leverages Big Data Analytics with Apache Hadoop and Apache Spark

2015

•   TIBCO Blog – Enterprise Integration Patterns Revisited for the Era of Big Data, IoT, Cloud and Microservices
  
•   TIBCO Blog – Differences between a Data Warehouse and a Live Datamart
  
•   DZone – A Comparison of Streaming Analytics Frameworks and Products
  
•   TIBCO Blog – BusinessWorks 6 as Leading Integration Platform
  
•   TIBCO Blog – Docker Containers in the Middleware World
  
•   TIBCO Blog – Do Microservices Equal the Death of the Enterprise Service Bus?
  
•   TIBCO Blog – Fast Data Analytics and an Intelligent BPM Suite for Improved Customer Experience
  
•   TIBCO Blog – ActiveMatrix BusinessWorks 6 + Apache Hadoop = Big Data Integration
  
•   TIBCO Blog – Creating Business Value by Example: Open API and API Management at Paypal
•   heise Big Data Special – In-Memory Data Grids: Concepts and Real World Use Cases
•   TIBCO Blog – StreamBase + Hadoop + Impala = Fast Data Streaming Analytics
  
•   TIBCO Blog – A complete guide to Microservices and DevOps
  
•   Voxxed – Enterprise Integration Patterns Revisited for the Era of Big Data and Internet of Things
  
•   Voxxed – A Good Microservices Architecture = Death of the Enterprise Service Bus (ESB)?

2014

•   ObjektSPEKTRUM – Open API and API Management as Game Changer for New Business Models
•   Voxxed – API Management as Game Changer for Cloud, Big Data and IoT: Product Comparison and Evaluation
•   InfoQ – Stream Processing as Game Changer in a Big Data / Hadoop World
•   JAXenter.com – A new Front for SOA – Open API and API Management
•   JavaSPEKTRUM – Apache Hadoop and its Ecosystem – How to choose the right frameworks and products?
•   ObjektSPEKTRUM  – How to create an intelligent Business Process thanks to Big Data
•   Software Developer’s JOURNAL – Big Data and Apache Hadoop – A perfect addon for BPM?

2013

•   ObjektSPEKTRUM – How to choose the right Enterprise Service Bus
•   NoSQL Roadshow Interview 9/2013 – Past, Present and Future of NoSQL
•   InfoQ 7/2013  – How to choose the Right Big Data / Hadoop Platform
•   JavaSPEKTRUM 3/2013 – Apache Camel Series (Part 6): Combination with the Actor Framework “Akka”
•   InfoQ 4/2013 – Choosing the right Enterprise Service Bus for your Integration Needs
•    JavaSPEKTRUM 2/2013 – Apache Camel Series (Part 5): Cloud Integration

2012

•    JavaSPEKTRUM 01/2013 – Apache Camel Series (Part 4): Leveraging Groovy and Scala
•   JavaSPEKTRUM 06/2012 – Apache Camel Series (Part 3): Deployment and Tool Support
•   JavaSPEKTRUM 05/2012 – Apache Camel Series (Part 2): Advanced Topics
•   JavaSPEKTRUM 04/2012 – Apache Camel Series (Part 1): Introduction
•   heise developer – Report from JavaOne 2012
•   heise developer – Report from Cloud Ops Summit 2012
•   heise developer – How to do Business Process Management correctly?
•   The H – The Showdown: Free integration framework on the Java platform
•   heise developer – Lightweight Integration Frameworks Apache Camel, Spring Integration or Mule – When to use them instead of a heavyweight ESB
•   Service Technology Magazine – Lessons Learned: Best Practices for a Successful Introduction of Business Process Management (BPM)
•   No Fluff Just Stuff – Spoilt for Choice: Which Integration Framework to use?
•   Sigs Datacom – One Week in the Life of an IT Consultant
  
•   JavaMagazin 04/2012  – Apache Camel goes Enterprise
•   heise developer 02/2012 – Lessons learned: Using modern JVM languages besides Java (Groovy, Scala, Clojure, JRuby, etc.)

2011

•   Java Spektrum 09/2011 – Einsatz und Grenzen von Java Server Faces 2.0 – Teil 3: Grenzen von JSF
•    heise Developer 08/2011 – Potentiale und Grenzen von Spring Roo
•   JavaMagazin 07/2011 – Lessons Learned: GWT 2.0 in der Praxis
•   Java Spektrum 07/2011 – Einsatz und Grenzen von Java Server Faces 2.0 – Teil 2: Erweiterungen von JSF
•   iX 06/2011 – MyBatis als Alternative zu SQL (JDBC) oder ORM (JPA, Hibernate)
•   Java Spektrum 05/2011 – Einsatz und Grenzen von Java Server Faces 2.0 – Teil 1: Grundlagen von JSF
•   JAVAaktuell 05/2011 – Buchreview “Camel in Action”
•   heise Developer 04/2011 – CONFESS_2011: Software für Enterprise-Anwendungen im Mittelpunkt
•   heise Developer 04/2011 – Oracle: Kritik an Suns Java-Release-Zyklen
•   heise Developer 03/2011 – Potenzial von JVM und Java EE im Fokus des TheServerSide Java Symposium 2011 (Bericht der IT-Konferenz aus Las Vegas)
•   JAVAaktuell 02/2011 – Die Java-Zertifizierung “Sun Certified Java Programmer” (SCJP, zukünftig OCJP) – Ein Erfahrungsbericht
•   JavaMagazin 02/2011 – Web-Frameworks im Java-Umfeld – Einsatzmöglichkeiten mit Beispielen aus der Praxis
•   JavaMagazin 01/2011 – Kategorisierung von Web-Frameworks im Java-Umfeld